Introduction Sensitive linear sweep voltammetry to have been applied to the catalytic kinetic analysis may be helpful for the application of some organic reagents to the analysis of inorganic ones by voltammetry, The ...Introduction Sensitive linear sweep voltammetry to have been applied to the catalytic kinetic analysis may be helpful for the application of some organic reagents to the analysis of inorganic ones by voltammetry, The catalytic reaction-linear sweep voltammetric method for the determination of noble metals, such as Ag, Os, Ru and Ir has been developed, but no report about the method for the determination of rhodium has been published so far.展开更多
Bio-, thermo-catalytic transitional zone gas (BTCTZ gas), of which burial depth is shallow (1000-2500m), chemical composition (C,/ΣC1-5 = 0.7-0.9) and isotopic composition (δ13C1= -55 to-48‰) coincide with the evol...Bio-, thermo-catalytic transitional zone gas (BTCTZ gas), of which burial depth is shallow (1000-2500m), chemical composition (C,/ΣC1-5 = 0.7-0.9) and isotopic composition (δ13C1= -55 to-48‰) coincide with the evolution level of organic matter (R0=0.25-0.6%) in the corresponding strata, is a natural gas of new genetic type. The genesis of BTCTZ gas must have some relation to microcatalysis under lower temperature and condensation of aromatic hydrocarbons. In line with the new theory of natural gas formation, the existence of BTCTZ gas is objective. According to data from all over the world, BTCTZ gas may hold an important position in the table of reserves of natural gas.展开更多
CoPc complexes were supported on the acid alumina using in-situ method.The resulting compounds were characterized by DTA-TGA thermal analysis,ICP,solid-state infrared,and Ultraviolet/visible spectroscopy,and tested as...CoPc complexes were supported on the acid alumina using in-situ method.The resulting compounds were characterized by DTA-TGA thermal analysis,ICP,solid-state infrared,and Ultraviolet/visible spectroscopy,and tested as catalysts for the eposidation of cyclohexene under ambient conditions using molecular dioxygen as oxidant and isobutyraldehyde as sacrificial reagent.The optimums for the reaction have been obtained.Under the conditions of time:9h,temperature:35℃,isobutyraldehyde to cyclohexene ratio:4,the weight of catalyst: 0.05g,the volume of solvent:20mL,the conversion of cyclohexene attained 73.5% and the selectivity of cyclohexene epoxide,84.1%展开更多
基金Supported by the National Natural Science Foundation of China
文摘Introduction Sensitive linear sweep voltammetry to have been applied to the catalytic kinetic analysis may be helpful for the application of some organic reagents to the analysis of inorganic ones by voltammetry, The catalytic reaction-linear sweep voltammetric method for the determination of noble metals, such as Ag, Os, Ru and Ir has been developed, but no report about the method for the determination of rhodium has been published so far.
文摘Bio-, thermo-catalytic transitional zone gas (BTCTZ gas), of which burial depth is shallow (1000-2500m), chemical composition (C,/ΣC1-5 = 0.7-0.9) and isotopic composition (δ13C1= -55 to-48‰) coincide with the evolution level of organic matter (R0=0.25-0.6%) in the corresponding strata, is a natural gas of new genetic type. The genesis of BTCTZ gas must have some relation to microcatalysis under lower temperature and condensation of aromatic hydrocarbons. In line with the new theory of natural gas formation, the existence of BTCTZ gas is objective. According to data from all over the world, BTCTZ gas may hold an important position in the table of reserves of natural gas.
文摘CoPc complexes were supported on the acid alumina using in-situ method.The resulting compounds were characterized by DTA-TGA thermal analysis,ICP,solid-state infrared,and Ultraviolet/visible spectroscopy,and tested as catalysts for the eposidation of cyclohexene under ambient conditions using molecular dioxygen as oxidant and isobutyraldehyde as sacrificial reagent.The optimums for the reaction have been obtained.Under the conditions of time:9h,temperature:35℃,isobutyraldehyde to cyclohexene ratio:4,the weight of catalyst: 0.05g,the volume of solvent:20mL,the conversion of cyclohexene attained 73.5% and the selectivity of cyclohexene epoxide,84.1%
