In conventional heterogeneous catalytic process, the activation of C-H bond remains a grand challenge. It is even more difficult to activate the inert C-H bond with other functional groups （e.g. OH） in the same mole...In conventional heterogeneous catalytic process, the activation of C-H bond remains a grand challenge. It is even more difficult to activate the inert C-H bond with other functional groups （e.g. OH） in the same molecule, remaining intact [1]. Although the transformation of C1 species （e.g. CO, CO2, CH4 and CH3OH） into C2 molecules （e.g. C2H4, C2HsOH and HOCH2CH2OH） via C-C coupling has been a hot research topic but the yield of aimed product is still needed to be improved. Ethylene glycol （EG） is a versatile chemical with many important applications, in particular for the manufacture of polyesters, predominantly poly（ethylene terephthalate） [2]. Recently, Wang, Deng and co-workers at Xiamen University cleverly designed a new process for the conversion of methanol to ethylene glycol, in which the EG selectivity can reach 90% （Eq. （1）） [3].展开更多
The clothing industry is considered one of the most polluting industries on the planet due to the high consumption of water,energy,chemicals/dyes,and high generation of solid waste and effluents.Faced with environment...The clothing industry is considered one of the most polluting industries on the planet due to the high consumption of water,energy,chemicals/dyes,and high generation of solid waste and effluents.Faced with environmental concerns,the textile ennoblement sector is the most critical of the textile production chain,especially the traditional dyeing processes.As an alternative to current problems,dyeing with supercritical CO_(2)(scCO_(2))has been presented as a clean and efficient process for a sustainable textile future.Supercritical fluid dyeing(SFD)has shown a growing interest due to its significant impact on environmental preservation and social,economic,and financial gains.The main SFD benefits include economy and reuse of non-adsorbed dyes;reduction of process time and energy expenditure;capture of atmospheric CO_(2)(greenhouse gas);use and recycling of CO_(2)in SFD;generation of carbon credits;water-free process;effluent-free process;reduction of CO_(2)emission and auxiliary chemicals.Despite being still a non-scalable and evolving technology,SFD is the future of dyeing.This review presented a comprehensive overview of the environmental impacts caused by traditional processes and confronted the advantages of SFD.The SFD technique was introduced,along with its latest advances and future perspectives.Financial and environmental gains were also discussed.展开更多
The underutilization of production capacity in recycling waste lithium-ion battery(LIB)highlights the demand for cost-effective and eco-friendly processes.This study challenges conventional practices by proposing a pr...The underutilization of production capacity in recycling waste lithium-ion battery(LIB)highlights the demand for cost-effective and eco-friendly processes.This study challenges conventional practices by proposing a product-oriented strategy that converts spent LIB into functional materials rather than only conventional metal salts.Phase evolution thermodynamics first identifies the conditions for selective extraction,enabling a novel oxygen-assisted chlorination roasting system.This single-step process achieves two transformative outcomes:lithium is converted to carbonate product,while cobalt is reconstructed into a functional catalyst serving as peroxymonosulfate activators.Specifically,99%of Li is recovered as lithium carbonate(99.6%purity),while upcycled catalyst demonstrates equivalent performance to commercial alternatives,achieving>98%efficiency in model reactions.Besides,system scaling analysis confirms dual sustainability advantages.Life-cycle assessment reveals a 61.5%reduction in carbon footprint compared to traditional recycling,while techno-economic analysis shows 50%higher profitability.This paradigm shift from simple metal recovery to functional material synthesis addresses both environmental and economic challenges in LIB recycling.Our findings demonstrate that this product design can enhance sustainability without compromising technical performance,providing a new slight for LIB recycling.展开更多
The rapid industrial growth and the necessity of recovering and recycling raw materials increased the interest in the production of highly selective and efficient separation tools.In this perspective,a relevant input ...The rapid industrial growth and the necessity of recovering and recycling raw materials increased the interest in the production of highly selective and efficient separation tools.In this perspective,a relevant input was given by the membrane-based technology and the production of imprinted membranes,which possess specific recognition properties at molecular and ionic level,offers the possibility of developing sustainable and green processes.Furthermore,the integration of imprinted membranes with traditional or membrane-based approaches is a promising strategy in the logic of process intensification,which means the combination of different operations in a single apparatus.This work discusses the concept and separation mechanisms of imprinted membranes.Furthermore,it presents an overview of their application in organic solvent nanofiltration,for the removal of toxic agents and recovery solvent,as well as valuable compounds.The recent advances in water treatment,such as pesticide removal and recovery of metal ions,are also discussed.Finally,potential applications of imprinted membranes in hybrid processes are highlighted,and a look into the future of membrane separations for water treatment and recovery of critical raw materials is offered.展开更多
This review paper aims at analysing the state of the art for partial oxidation and oxidative dehydrogenation（ODH） reactions of lower alkanes C–Cinto olefins and oxygenated products（aldehydes, anhydrides,carboxylic...This review paper aims at analysing the state of the art for partial oxidation and oxidative dehydrogenation（ODH） reactions of lower alkanes C–Cinto olefins and oxygenated products（aldehydes, anhydrides,carboxylic acids） on metal oxide catalysts with cations of variable oxidation state, such as Mo and V in particular. Key parameters to be met by the catalysts, such as their redox properties, their structural aspects, active sites composed of ensembles of atoms isolated one from the others, mechanisms of reactions, are discussed. Main features of the different reactions of C–Calkanes and catalysts are analysed and their generalisation for determining more active and more selective catalysts is attempted. Prospective views for the future of the domain are proposed.展开更多
In this work,a sustainable method to prepare functional cellulose nanocrystals(CNCs)and cellulose nanofibrils(CNFs)using formic acid(FA)(a recoverable organic acid)was established.After FA hydrolysis,the obtained CNCs...In this work,a sustainable method to prepare functional cellulose nanocrystals(CNCs)and cellulose nanofibrils(CNFs)using formic acid(FA)(a recoverable organic acid)was established.After FA hydrolysis,the obtained CNCs could be well dispersed in DMAC.Thus,the CNC products and fibrous cellulosic solid residue(FCSR)in DMAC could be easily separated by a conventional centrifugal process,and the collected FCSR could be further fibrillated to CNFs with relatively low-intensity mechanical fibrillation process.The isolated CNC products showed high crystallinity index(about 75%)and excellent thermal stability(with onset thermal degradation temperature of 325℃).Both the resultant CNCs and CNFs showed better dispersibility in DMSO,DMF and DMAC respectively because of the introduction of ester groups on the surface of the products.The presence of surface ester groups could increase the interface compatibility of nanocelluloses with polymeric matrices and enable their applications in reinforcing polymeric matrix materials(e.g.the composite films like PHVB+CNFs).展开更多
Value creation is a significant part of the sustainable building process.To understand the process of value creation,this paper identifies a number of important issues.First,the paper addresses the existence of and iden...Value creation is a significant part of the sustainable building process.To understand the process of value creation,this paper identifies a number of important issues.First,the paper addresses the existence of and identifies reasons for com-plexity in the process of value creation over a whole lifecycle(WLC).Then,a conceptual framework model is developed and adapted to the WLC in order to monitor building process stages and intervals.Next,the concepts and strategies lead-ing to WLC value maximization are addressed.Finally,a conceptual WLC value creation model is proposed that is based on sustainable building process stages and building asset stakeholders’benefits.The paper indicates how value cre-ated is an accumulation of values acquired through various operations over the building WLC.展开更多
Plasma catalysis technology is emerging as a promising approach for addressing energy and environmental challenges in sustainability.This review provides an overview of plasma technology and summarizes recent advances...Plasma catalysis technology is emerging as a promising approach for addressing energy and environmental challenges in sustainability.This review provides an overview of plasma technology and summarizes recent advances in plasma catalysis from both experimental and theoretical perspectives.Current laboratory-scale studies have demonstrated the versatility of plasma catalysis in various processes,including carbon conversion,hydrogen production,and the removal of volatile organic compounds.The inherently complex environment of plasma catalysis requires in situ characterization and theoretical modeling to elucidate the underlying reaction mechanisms,which in turn guide the rational design of efficient catalysts and optimized reactor configurations.These advances are vital for enhancing the economic feasibility and accelerating the commercialization of this technology.Nevertheless,the scale-up and practical deployment of plasma-catalytic systems from laboratory to industrial scales remain challenging.In this review,we critically examine the current state of plasma catalysis research and its applications across a wide range of reactions.Particular attention is given to in situ mechanistic studies,reactor design,catalyst development,process scale-up,and theoretical modeling.Finally,we provide a forward-looking perspective on the opportunities and future directions to address existing challenges and harness the potential of plasma catalysis toward sustainable development.展开更多
文摘In conventional heterogeneous catalytic process, the activation of C-H bond remains a grand challenge. It is even more difficult to activate the inert C-H bond with other functional groups （e.g. OH） in the same molecule, remaining intact [1]. Although the transformation of C1 species （e.g. CO, CO2, CH4 and CH3OH） into C2 molecules （e.g. C2H4, C2HsOH and HOCH2CH2OH） via C-C coupling has been a hot research topic but the yield of aimed product is still needed to be improved. Ethylene glycol （EG） is a versatile chemical with many important applications, in particular for the manufacture of polyesters, predominantly poly（ethylene terephthalate） [2]. Recently, Wang, Deng and co-workers at Xiamen University cleverly designed a new process for the conversion of methanol to ethylene glycol, in which the EG selectivity can reach 90% （Eq. （1）） [3].
文摘The clothing industry is considered one of the most polluting industries on the planet due to the high consumption of water,energy,chemicals/dyes,and high generation of solid waste and effluents.Faced with environmental concerns,the textile ennoblement sector is the most critical of the textile production chain,especially the traditional dyeing processes.As an alternative to current problems,dyeing with supercritical CO_(2)(scCO_(2))has been presented as a clean and efficient process for a sustainable textile future.Supercritical fluid dyeing(SFD)has shown a growing interest due to its significant impact on environmental preservation and social,economic,and financial gains.The main SFD benefits include economy and reuse of non-adsorbed dyes;reduction of process time and energy expenditure;capture of atmospheric CO_(2)(greenhouse gas);use and recycling of CO_(2)in SFD;generation of carbon credits;water-free process;effluent-free process;reduction of CO_(2)emission and auxiliary chemicals.Despite being still a non-scalable and evolving technology,SFD is the future of dyeing.This review presented a comprehensive overview of the environmental impacts caused by traditional processes and confronted the advantages of SFD.The SFD technique was introduced,along with its latest advances and future perspectives.Financial and environmental gains were also discussed.
基金supported by the Natural Science Foundation of Xiamen,China(3502Z202372038)the Opening Project of Key Laboratory of Solid Waste Treatment and Resource Recycle,Ministry of Education(23kfgk04)the Scientific Research Funds of Huaqiao University(Grant ID:20221XD053)。
文摘The underutilization of production capacity in recycling waste lithium-ion battery(LIB)highlights the demand for cost-effective and eco-friendly processes.This study challenges conventional practices by proposing a product-oriented strategy that converts spent LIB into functional materials rather than only conventional metal salts.Phase evolution thermodynamics first identifies the conditions for selective extraction,enabling a novel oxygen-assisted chlorination roasting system.This single-step process achieves two transformative outcomes:lithium is converted to carbonate product,while cobalt is reconstructed into a functional catalyst serving as peroxymonosulfate activators.Specifically,99%of Li is recovered as lithium carbonate(99.6%purity),while upcycled catalyst demonstrates equivalent performance to commercial alternatives,achieving>98%efficiency in model reactions.Besides,system scaling analysis confirms dual sustainability advantages.Life-cycle assessment reveals a 61.5%reduction in carbon footprint compared to traditional recycling,while techno-economic analysis shows 50%higher profitability.This paradigm shift from simple metal recovery to functional material synthesis addresses both environmental and economic challenges in LIB recycling.Our findings demonstrate that this product design can enhance sustainability without compromising technical performance,providing a new slight for LIB recycling.
文摘The rapid industrial growth and the necessity of recovering and recycling raw materials increased the interest in the production of highly selective and efficient separation tools.In this perspective,a relevant input was given by the membrane-based technology and the production of imprinted membranes,which possess specific recognition properties at molecular and ionic level,offers the possibility of developing sustainable and green processes.Furthermore,the integration of imprinted membranes with traditional or membrane-based approaches is a promising strategy in the logic of process intensification,which means the combination of different operations in a single apparatus.This work discusses the concept and separation mechanisms of imprinted membranes.Furthermore,it presents an overview of their application in organic solvent nanofiltration,for the removal of toxic agents and recovery solvent,as well as valuable compounds.The recent advances in water treatment,such as pesticide removal and recovery of metal ions,are also discussed.Finally,potential applications of imprinted membranes in hybrid processes are highlighted,and a look into the future of membrane separations for water treatment and recovery of critical raw materials is offered.
文摘This review paper aims at analysing the state of the art for partial oxidation and oxidative dehydrogenation（ODH） reactions of lower alkanes C–Cinto olefins and oxygenated products（aldehydes, anhydrides,carboxylic acids） on metal oxide catalysts with cations of variable oxidation state, such as Mo and V in particular. Key parameters to be met by the catalysts, such as their redox properties, their structural aspects, active sites composed of ensembles of atoms isolated one from the others, mechanisms of reactions, are discussed. Main features of the different reactions of C–Calkanes and catalysts are analysed and their generalisation for determining more active and more selective catalysts is attempted. Prospective views for the future of the domain are proposed.
基金supported by the National Natural Science Foundation of China (contract grant numbers:21306261,31470609,and 25106240)Primary Research and Development Plan of Shandong Province (contract grant numbers:2016GGX104003,and 2016CYJS07A02).
文摘In this work,a sustainable method to prepare functional cellulose nanocrystals(CNCs)and cellulose nanofibrils(CNFs)using formic acid(FA)(a recoverable organic acid)was established.After FA hydrolysis,the obtained CNCs could be well dispersed in DMAC.Thus,the CNC products and fibrous cellulosic solid residue(FCSR)in DMAC could be easily separated by a conventional centrifugal process,and the collected FCSR could be further fibrillated to CNFs with relatively low-intensity mechanical fibrillation process.The isolated CNC products showed high crystallinity index(about 75%)and excellent thermal stability(with onset thermal degradation temperature of 325℃).Both the resultant CNCs and CNFs showed better dispersibility in DMSO,DMF and DMAC respectively because of the introduction of ester groups on the surface of the products.The presence of surface ester groups could increase the interface compatibility of nanocelluloses with polymeric matrices and enable their applications in reinforcing polymeric matrix materials(e.g.the composite films like PHVB+CNFs).
文摘Value creation is a significant part of the sustainable building process.To understand the process of value creation,this paper identifies a number of important issues.First,the paper addresses the existence of and identifies reasons for com-plexity in the process of value creation over a whole lifecycle(WLC).Then,a conceptual framework model is developed and adapted to the WLC in order to monitor building process stages and intervals.Next,the concepts and strategies lead-ing to WLC value maximization are addressed.Finally,a conceptual WLC value creation model is proposed that is based on sustainable building process stages and building asset stakeholders’benefits.The paper indicates how value cre-ated is an accumulation of values acquired through various operations over the building WLC.
基金the Central Research Fund(2022),the SCIENCE AND ENGINEERING RESEARCH COUNCIL,the A*STAR(Agency for Science,Technology and Research)the financial support from the Central Research Fund(2024),the SCIENCE AND ENGINEERING RESEARCH COUNCIL,the A*STAR(Agency for Science,Technology and Research)+2 种基金the financial support by the A*STAR AME IAF-PP grant(Grant No.A19E9a0103)the National Research Foundation,Singapore,and the A*STAR(Agency for Science,Technology and Research)under its LCERFI program Award No U2102d2002the financial support by the project under the Australian Research Council(Grant No.FL230100023).
文摘Plasma catalysis technology is emerging as a promising approach for addressing energy and environmental challenges in sustainability.This review provides an overview of plasma technology and summarizes recent advances in plasma catalysis from both experimental and theoretical perspectives.Current laboratory-scale studies have demonstrated the versatility of plasma catalysis in various processes,including carbon conversion,hydrogen production,and the removal of volatile organic compounds.The inherently complex environment of plasma catalysis requires in situ characterization and theoretical modeling to elucidate the underlying reaction mechanisms,which in turn guide the rational design of efficient catalysts and optimized reactor configurations.These advances are vital for enhancing the economic feasibility and accelerating the commercialization of this technology.Nevertheless,the scale-up and practical deployment of plasma-catalytic systems from laboratory to industrial scales remain challenging.In this review,we critically examine the current state of plasma catalysis research and its applications across a wide range of reactions.Particular attention is given to in situ mechanistic studies,reactor design,catalyst development,process scale-up,and theoretical modeling.Finally,we provide a forward-looking perspective on the opportunities and future directions to address existing challenges and harness the potential of plasma catalysis toward sustainable development.
