Developing a cost-effective and environmentally friendly process for the production of valuable chemicals from abundant herbal biomass receives great attentions in recent years.Herein,taking advantage of the“lignin f...Developing a cost-effective and environmentally friendly process for the production of valuable chemicals from abundant herbal biomass receives great attentions in recent years.Herein,taking advantage of the“lignin first”strategy,corn straw is converted to valuable chemicals including lignin monomers,furfural and 5-methoxymethylfurfural via a two steps process.The key of this research lies in the development of a green and low-cost catalytic process utilizing magnetic Raney Ni catalyst and high boiling point ethylene glycol.The utilization of neat ethylene glycol as the sole slovent under atmospheric conditions obviates the need for additional additives,thereby facilitating the entire process to be conducted in glass flasks and rendering it highly convenient for scaling up.In the initial step,depolymerization of corn straw lignin resulted in a monomer yield of 18.1 wt%.Subsequently,in a dimethyl carbonate system,the carbohydrate component underwent complete conversion in a one-pot process,yielding furfural and 5-methoxymethylfurfural as the primary products with an impressive yield of 47.7%.展开更多
人类探月活动的核心目标已从“认识月球”转变为“认识与利用并重”,为了满足月面原位工程建造研究对月壤材料的需要,提出了一种模拟月壤制备与评价的具体方法,以嫦娥五号月球样品为模拟对象研发了模拟月壤TC-1C(Tsinghua-China Buildin...人类探月活动的核心目标已从“认识月球”转变为“认识与利用并重”,为了满足月面原位工程建造研究对月壤材料的需要,提出了一种模拟月壤制备与评价的具体方法,以嫦娥五号月球样品为模拟对象研发了模拟月壤TC-1C(Tsinghua-China Building Materials Academy-type1 for Construction),测试了模拟月壤在物相组成、粒径分布、颗粒形态和密度等4项关键指标的相似度,结果显示其与嫦娥五号真实月壤的相似度均超过0.94。展开更多
基金supported by the Fundamental Research Funds for the Central Universities(QNTD202302)National Natural Science Foundation of China(22378024)the Foreign expert program(G2022109001L).
文摘Developing a cost-effective and environmentally friendly process for the production of valuable chemicals from abundant herbal biomass receives great attentions in recent years.Herein,taking advantage of the“lignin first”strategy,corn straw is converted to valuable chemicals including lignin monomers,furfural and 5-methoxymethylfurfural via a two steps process.The key of this research lies in the development of a green and low-cost catalytic process utilizing magnetic Raney Ni catalyst and high boiling point ethylene glycol.The utilization of neat ethylene glycol as the sole slovent under atmospheric conditions obviates the need for additional additives,thereby facilitating the entire process to be conducted in glass flasks and rendering it highly convenient for scaling up.In the initial step,depolymerization of corn straw lignin resulted in a monomer yield of 18.1 wt%.Subsequently,in a dimethyl carbonate system,the carbohydrate component underwent complete conversion in a one-pot process,yielding furfural and 5-methoxymethylfurfural as the primary products with an impressive yield of 47.7%.
文摘人类探月活动的核心目标已从“认识月球”转变为“认识与利用并重”,为了满足月面原位工程建造研究对月壤材料的需要,提出了一种模拟月壤制备与评价的具体方法,以嫦娥五号月球样品为模拟对象研发了模拟月壤TC-1C(Tsinghua-China Building Materials Academy-type1 for Construction),测试了模拟月壤在物相组成、粒径分布、颗粒形态和密度等4项关键指标的相似度,结果显示其与嫦娥五号真实月壤的相似度均超过0.94。
