【摘 要】
：
Methanol synthesis from hydrogenation of CO2 is investigated over Cu/ZnO/Al2O3 catalysts prepared by decomposition of M(Cu,Zn)-ammonia complexes (DMAC) at vario
【机 构】
：
State Key Laboratory for Oxo Synthesis and Selective Oxidation, Graduate School of Chinese Academy o
论文部分内容阅读
Methanol synthesis from hydrogenation of CO2 is investigated over Cu/ZnO/Al2O3 catalysts prepared by decomposition of M(Cu,Zn)-ammonia complexes (DMAC) at various temperatures.The catalysts were characterized in detail,including X-ray diffraction,N2 adsorption-desorption,N2O chemisorption,temperature-programmed reduction and evolved gas analyses.The influences of DMAC temperature,reaction temperature and specific Cu surface area on catalytic performance are investigated.It is considered that the aurichalcite phase in the precursor plays a key role in improving the physiochemical properties and activities of the final catalysts.The catalyst from rich-aurichalcite precursor exhibits large specific Cu surface area and high space time yield of methanol (212 g/(Lcat·h); T =513 K,p =3 MPa,S V =12000 h-1).
其他文献
2-(Dimethylamino)-1,3-dithiocyanatopropane(1)has been prepared as a key intermediate synthesizing a natural insecticide Cartap by the reaction of 1-dimethylamin
Let S be a Riemann surface that contains one puncture x.Let,ψ be the collection of simple closed geodesics on S,and let ψ denote the set of mapping classes on
In this paper the effect of temperature on the mechanoluminescence of Au doped phosphors of(Zn,Cd)S is described.It is found that the ML disappears beyond a par
Layered hydroxide metal acetate Co2(OH)3(CH3COO)·H2O with an interlayer spacing of 1.282 nm has been synthesized by a novel method which is employed in ethanol
Flat geotubes are widely used for coastal structures such as seawalls,breakwaters and sightseeing groins,etc..However,the understanding of the stable mechanism
The kinetics of the oxidation of 1,2-butanediol or mephenesin by ditelluratocuprate(Ⅲ)(DTC)was investigated spectrophotometrically at temperatures between 283.
O-Alkylation of oximes with N-vinylpyrrolidin-2-one or iV-methyl-N-vinylacetamide was efficiently initiated by a catalytic amount of cerium (IV) ammonium nitrat
Ethylene glycol aluminum was prepared efficiently and characterized by FT-IR and NMR. It exhibited higher catalytic activity and had profitable effect than tita
Catalytic dehydrogenation of isobutane has recently received considerable attention because of the increasing demand for isobutene.In this study,the synergistic
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7