HMST-5A/SnCl4 complex catalyst is prepared by using MST-5A and SnCl4 in alcohol solution as a medium,and characterized by DTA,IR and UV-vis spectrum.The preparation method is simple and the catalyst is easily separate...HMST-5A/SnCl4 complex catalyst is prepared by using MST-5A and SnCl4 in alcohol solution as a medium,and characterized by DTA,IR and UV-vis spectrum.The preparation method is simple and the catalyst is easily separated.The experimental results show that the catalyst has high activity on the esterification of n-butyl alcohol and acetic acid and can be used repeatedly.展开更多
The separation of hydrogen and deuterium by cryogenic adsorption was conducted, using the molecular sieve 5A as adsorbent, helium as the carder gas in a fixed column. The breakthrough curves of hydrogen, deuterium and...The separation of hydrogen and deuterium by cryogenic adsorption was conducted, using the molecular sieve 5A as adsorbent, helium as the carder gas in a fixed column. The breakthrough curves of hydrogen, deuterium and the mixture of two components in helium carder gas were measured, a separation factor, approximately 2, for the hydrogen-deuterium binary mixture was obtained. The equilibrium model was built for simulation of the concentration distribution for single hydrogen, deuterium and their mixture with helium carder in the fixed column, and the simulation compared well with the experimental results.展开更多
Via multi-dimensional gas chromatography, configured with parallel dual-channel, double detectors, valves switching and back flushing, rapid analysis of the gas compositions consisting of C1-C5 hydrocarbons and perman...Via multi-dimensional gas chromatography, configured with parallel dual-channel, double detectors, valves switching and back flushing, rapid analysis of the gas compositions consisting of C1-C5 hydrocarbons and permanent gases, such as CO2, H2S, H2, and CO, for direct coal liquefaction has been realized. With four packed chromatographic columns, which are Hayesep-Q pre-column, Hayesep-Q column, molecular sieve 5A column and one PLOT A1203 S capillary column, the gas compositions for direct coal liquefaction are analyzed qualitatively and quantitatively by the external standard method. The determination method has such advantages as excellent separation, simple operation, rapid analysis and accurate results.展开更多
文摘HMST-5A/SnCl4 complex catalyst is prepared by using MST-5A and SnCl4 in alcohol solution as a medium,and characterized by DTA,IR and UV-vis spectrum.The preparation method is simple and the catalyst is easily separated.The experimental results show that the catalyst has high activity on the esterification of n-butyl alcohol and acetic acid and can be used repeatedly.
文摘The separation of hydrogen and deuterium by cryogenic adsorption was conducted, using the molecular sieve 5A as adsorbent, helium as the carder gas in a fixed column. The breakthrough curves of hydrogen, deuterium and the mixture of two components in helium carder gas were measured, a separation factor, approximately 2, for the hydrogen-deuterium binary mixture was obtained. The equilibrium model was built for simulation of the concentration distribution for single hydrogen, deuterium and their mixture with helium carder in the fixed column, and the simulation compared well with the experimental results.
文摘Via multi-dimensional gas chromatography, configured with parallel dual-channel, double detectors, valves switching and back flushing, rapid analysis of the gas compositions consisting of C1-C5 hydrocarbons and permanent gases, such as CO2, H2S, H2, and CO, for direct coal liquefaction has been realized. With four packed chromatographic columns, which are Hayesep-Q pre-column, Hayesep-Q column, molecular sieve 5A column and one PLOT A1203 S capillary column, the gas compositions for direct coal liquefaction are analyzed qualitatively and quantitatively by the external standard method. The determination method has such advantages as excellent separation, simple operation, rapid analysis and accurate results.
