Pt catalysts are commonly used for chemical reaction processes due to its high catalytic activity and selectivity.Notably,the size of metal particles often has a significant impact on the performance of the metal-load...Pt catalysts are commonly used for chemical reaction processes due to its high catalytic activity and selectivity.Notably,the size of metal particles often has a significant impact on the performance of the metal-loaded catalysts.Therefore,developing highly efficiently synthesis method for the size control of Pt catalysts has great development prospects and research value.In this study,high-throughput size tuning of Pt-based catalysts was achieved by carbonizing the carriers.The experimental and characterization results showed that the size of the loaded Pt nanoparticles varied with different concentrations of glucose solution during carriers carbonization process.The reduction of 4-nitrophenol as a template reaction indicated that the reaction rate constant of the catalyst is approximately linear with the size of Pt particles.Importantly,a laboratory-built high-throughput synthesis system was applied for the catalyst synthesis,which enhances the automation of the laboratory exploratory experiments and makes it possible to synthesize catalysts with controllable size in batches.展开更多
Developing effective adsorbents with high adsorption capacity and selectivity for separating methane(CH_(4))from natural gas mixtures containing ethane(C_(2)H_(6))and propane(C_(3)H_(8))remains a significant challenge...Developing effective adsorbents with high adsorption capacity and selectivity for separating methane(CH_(4))from natural gas mixtures containing ethane(C_(2)H_(6))and propane(C_(3)H_(8))remains a significant challenge.Previous studies on CH_(4)/C_(2)H_(6)/C_(3)H_(8) separation have primarily focused on enhancing C_(3)H_(8)/CH_(4) selectivity,often neglecting the crucial role of C_(2)H_(6)/CH_(4) selectivity,thereby limiting CH_(4) productivity.Here,we present a strategy to modulate pore size and chemistry in two bimetallic coordination networks,CuIn(ina)4 and CuIn(3-ain)_(4),to enhance the separation of CH_(4)/C_(2)H_(6)/C_(3)H_(8) mixtures.Remarkably,CuIn(3-ain)_(4) exhibits a record C_(2)H_(6)/CH_(4) selectivity and a benchmark low-pressure C_(2)H_(6) adsorption capacity,achieving a CH_(4) productivity of 7.92 mmol g^(−1) with a purity exceeding 99.9999%,surpassing most known porous materials.Theoretical simulations reveal how selective adsorption can be finely tuned by adjusting pore size and geometry.Moreover,breakthrough experiments with ternary mixtures,along with regeneration and cycling tests,underscore the exceptional potential of CuIn(3-ain)_(4) as a highly efficient adsorbent for natural gas separation.展开更多
基金This work was supported by the National Key Research and Development Program of China(grant No.2022YFB3807500)National Natural Science Foundation of China(grant No.22078005)。
文摘Pt catalysts are commonly used for chemical reaction processes due to its high catalytic activity and selectivity.Notably,the size of metal particles often has a significant impact on the performance of the metal-loaded catalysts.Therefore,developing highly efficiently synthesis method for the size control of Pt catalysts has great development prospects and research value.In this study,high-throughput size tuning of Pt-based catalysts was achieved by carbonizing the carriers.The experimental and characterization results showed that the size of the loaded Pt nanoparticles varied with different concentrations of glucose solution during carriers carbonization process.The reduction of 4-nitrophenol as a template reaction indicated that the reaction rate constant of the catalyst is approximately linear with the size of Pt particles.Importantly,a laboratory-built high-throughput synthesis system was applied for the catalyst synthesis,which enhances the automation of the laboratory exploratory experiments and makes it possible to synthesize catalysts with controllable size in batches.
基金financially supported by the National Natural Science Foundation of China(No.22371221)the National Key R&D Program of China(2024YFE0101800)+2 种基金the Programme of Introducing Talents of Discipline to Universities(B23025)State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering(KF2023009)the Shaanxi Fundamental Science Research Project for Chemistry and Biology(23JHQ007).
文摘Developing effective adsorbents with high adsorption capacity and selectivity for separating methane(CH_(4))from natural gas mixtures containing ethane(C_(2)H_(6))and propane(C_(3)H_(8))remains a significant challenge.Previous studies on CH_(4)/C_(2)H_(6)/C_(3)H_(8) separation have primarily focused on enhancing C_(3)H_(8)/CH_(4) selectivity,often neglecting the crucial role of C_(2)H_(6)/CH_(4) selectivity,thereby limiting CH_(4) productivity.Here,we present a strategy to modulate pore size and chemistry in two bimetallic coordination networks,CuIn(ina)4 and CuIn(3-ain)_(4),to enhance the separation of CH_(4)/C_(2)H_(6)/C_(3)H_(8) mixtures.Remarkably,CuIn(3-ain)_(4) exhibits a record C_(2)H_(6)/CH_(4) selectivity and a benchmark low-pressure C_(2)H_(6) adsorption capacity,achieving a CH_(4) productivity of 7.92 mmol g^(−1) with a purity exceeding 99.9999%,surpassing most known porous materials.Theoretical simulations reveal how selective adsorption can be finely tuned by adjusting pore size and geometry.Moreover,breakthrough experiments with ternary mixtures,along with regeneration and cycling tests,underscore the exceptional potential of CuIn(3-ain)_(4) as a highly efficient adsorbent for natural gas separation.
