Responsive nanocontainers have dual functions in targeted delivery of corrosion inhibitors and emulsion development of shale oil in oil and gas fields,exhibiting potential for simultaneously achieving metal protection...Responsive nanocontainers have dual functions in targeted delivery of corrosion inhibitors and emulsion development of shale oil in oil and gas fields,exhibiting potential for simultaneously achieving metal protection and efficient oil and gas development from a material perspective.Here,we propose the preparation of a pH-responsive nanocontainer,HMSNs-g-PDEAEMA(poly[2-(N,N-diethyl amino)ethyl-methacrylate](PDEAEMA)grafted onto hollow mesoporous spherical silica(HMSNs)),to integrate the delivery of 2-mercaptobenzothiazole(MBT)for targeted corrosion inhibition and the emulsification of oil as Pickering emulsifiers.Under acidic conditions(reduced pH value caused by localized corrosion or high concentration acidic gases),PDEAEMA chains are protonated and extended by electrostatic repulsion,exposing pores on HMSNs surface and allowing the controlled release of loaded MBT molecules.Once transforming into a neutral or alkaline environment,the responsive release of the MBT process is inhibited.After the fluid passes through the wellbore and enters the shale layer,the HMSNs-g-PDEAEMA nanocontainers act as Pickering emulsifiers to achieve emulsification.The emulsified oil can be extracted onto the ground more efficiently,and a following pH-responsive demulsification process can be achieved.Overall,through a pH-responsive nanocontainer material,the dual function of corrosion inhibition and emulsification in oil and gas development is possible to be simultaneously achieved.展开更多
Amphiphilic solid nanoparticles can stabilize a biphasic system to form a Pickering emulsion like organic amphiphilic surfactants,and have profound implications for oil-aqueous biphasic reactions.In the current work,f...Amphiphilic solid nanoparticles can stabilize a biphasic system to form a Pickering emulsion like organic amphiphilic surfactants,and have profound implications for oil-aqueous biphasic reactions.In the current work,for the first time,we prepared an amphiphilic organosilicon framework(AOF)simply by hydrolysis and condensation of the amphiphilic organosiloxane precursor 2,5-bis[(E)-2-(triethoxysilyl)vinyl]pyridine[BTOSVP]which can be used as a Pickering emulsifier and a catalyst carrier for a W–O emulsion in various systems.After catalyst TS-1 was implanted in the amphiphilic AOF carrier,it turned into a solid Pickering catalyst,yolk–shell TS-1@AOF,that can stabilize water–oil emulsions and catalyze reactions at the liquid/liquid interface.The obtained Pickering catalyst showed remarkable activity toward the epoxidation reaction of 1-hexene in water with hydrogen peroxide(H_(2)O_(2))as oxidant.展开更多
基金financially supported by the National Natu-ral Science Foundation of China(Nos.52204066 and 52474020)the Shandong Province Youth Entrepreneurship Technology Sup-port Program for Higher Education Institutions(No.2023KJ060)the Fundamental Research Funds for the Central Universities(No.23CX06018A).
文摘Responsive nanocontainers have dual functions in targeted delivery of corrosion inhibitors and emulsion development of shale oil in oil and gas fields,exhibiting potential for simultaneously achieving metal protection and efficient oil and gas development from a material perspective.Here,we propose the preparation of a pH-responsive nanocontainer,HMSNs-g-PDEAEMA(poly[2-(N,N-diethyl amino)ethyl-methacrylate](PDEAEMA)grafted onto hollow mesoporous spherical silica(HMSNs)),to integrate the delivery of 2-mercaptobenzothiazole(MBT)for targeted corrosion inhibition and the emulsification of oil as Pickering emulsifiers.Under acidic conditions(reduced pH value caused by localized corrosion or high concentration acidic gases),PDEAEMA chains are protonated and extended by electrostatic repulsion,exposing pores on HMSNs surface and allowing the controlled release of loaded MBT molecules.Once transforming into a neutral or alkaline environment,the responsive release of the MBT process is inhibited.After the fluid passes through the wellbore and enters the shale layer,the HMSNs-g-PDEAEMA nanocontainers act as Pickering emulsifiers to achieve emulsification.The emulsified oil can be extracted onto the ground more efficiently,and a following pH-responsive demulsification process can be achieved.Overall,through a pH-responsive nanocontainer material,the dual function of corrosion inhibition and emulsification in oil and gas development is possible to be simultaneously achieved.
基金supported by the National Natural Science Foundation of China(21390394)the National Basic Research Program of China(2012CB821700 and 2011CB808703)+3 种基金NSFC(21261130584 and 91022030)“111”project(B07016)Award Project of KAUST(CRG-1-2012-LAI-009)Ministry of Education,Science and Technology Development Center Project(20120061130012).
文摘Amphiphilic solid nanoparticles can stabilize a biphasic system to form a Pickering emulsion like organic amphiphilic surfactants,and have profound implications for oil-aqueous biphasic reactions.In the current work,for the first time,we prepared an amphiphilic organosilicon framework(AOF)simply by hydrolysis and condensation of the amphiphilic organosiloxane precursor 2,5-bis[(E)-2-(triethoxysilyl)vinyl]pyridine[BTOSVP]which can be used as a Pickering emulsifier and a catalyst carrier for a W–O emulsion in various systems.After catalyst TS-1 was implanted in the amphiphilic AOF carrier,it turned into a solid Pickering catalyst,yolk–shell TS-1@AOF,that can stabilize water–oil emulsions and catalyze reactions at the liquid/liquid interface.The obtained Pickering catalyst showed remarkable activity toward the epoxidation reaction of 1-hexene in water with hydrogen peroxide(H_(2)O_(2))as oxidant.
