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硒代缩水甘油醚在Chiralcel OJ-H手性柱上的拆分
手性拆分 手性固定相 硒代缩水甘油醚
2009/3/19
采用高效液相色谱Chiralcel OJ-H色谱手性柱，在正相条件下对硒代缩水甘油醚手性化合物进行手性拆分，讨论流动相的组成、溶质的结构对手性拆分的影响。
In order to obtain solubility data of propylene in 2-butanol+water solutions, gas-liquid equilibrium(GLE) experiment was carried out at 303.15-333.15 K, 0.3-1.2 MPa with static equilibrium still. Orig...
A lattice fluid model, Sanchez-Lacombe equation, is used to predict the phase behavior for a styrene/CO2/polystyrene ternary system. The binary parameters involved in the equation were optimized usi...
The stability of Candida rugosa lipase coated with glutamic acid didodecyl ester ribitol amide was investigated taking esterification of lauryl alcohol and lauric acid in isooctane as a model reacti...
Experimental data on density and viscosity at 303.15K and 323.15K are presented for the binary mixtures of p-xylene with cyclohexane, n-heptane, n-octane, sulfolane, N-methyl-2-pyrrolidone and acetic ...
酚醛树脂改性煤焦油沥青中制得的中间相球体的结构特征
mesocarbon microbeads mesophase phenolic resin scanning electron microscopy
2009/3/11
Mesocarbon microbeads (MCMB) were prepared from coal tar pitch modified by phenolic resin and from the same pitch modified by phenolic resin and hexamethylenetetramine at 440℃ for 1h. By investigating...
Pervaporation membrane with preferential permeation for organic compounds over water was preparedand characterized. Selection of membrane material and the effects of polydimethylsiloxane (PDMS), cro...
高压下甲烷在乙醇-正已烷混合溶剂中的溶解度测定与研究
甲烷 溶解度 混合物
2009/3/10
Solubility data were first presented for methane in the mixture of ethanol-hexane at temperatures from 291.15K to 318.15K and pressures up to 12.00MPa. The experimental data were correlated by PR and ...
甲基-酰基-萘在庚烷、辛烷和十二烷中溶解度的测定与关联
2-methyl-6-acetylnaphthalene 2-methyl-7-acetylnaphthalene solubility
2009/3/6
The solubilities of 2-methyl-6-acetylnaphthalene (2,6-MAN) and 2-methyl-7-acetylnaphthalene (2,7-MAN) in n-heptane, n-octane, and n-dodecane were measured, respectively, from 273.15 to 319.15K using a...
甲烷的二氧化碳重整动力学研究
CH4 reforming Ni catalysts syngas
2009/3/6
The kinetics of CO2 reforming of methane has been studied at 976－1033K on a commercial NiO/CaO/Al2O3 catalyst in a packed-bed continuous reactor. The reaction was carried out at atmospheric pressure...
A synthetic technology for the production of methyl-ethyl-ketone (MEK) is introduced, which makes use of butylene catalytic hydration to produce secondary butanol (SBA) and this is followed by dehydro...
50%过氧化环己酮生产新工艺
环己酮 过氧化环己酮 生产工艺 有机合成
2009/3/5
过氧化环己酮新工艺采用环己酮和过氧化氢为原料，在无机酸的催化下，经过氧化反应(剧烈的放热反应)后，氧化生成过氧化环己酮和水。该工艺与原生产的老工艺在原料使用上相同，但是工艺流程缩短了，因此新工艺生产的产品比老工艺产品的成本可降低2000元/吨左右。老生产工艺生产的产品为晶体，理论活性氧量为12.99％，实际活性氧量为11.7％；使用时再调配成液体(白色糊状)，这样实际使用时活性氧量仅为6.5％。该...
Six preparation methods for polymeric organic-inorganic nanocomposites and their respective mecha-nisms and features are reviewed. The extraordinary properties of polymeric organic- inorganic nanocom...
The physicochemical features of phosphorus-modified ZSM-5 zeolites (SiO2/Al2O3 molar ratio is 25)were characterized by XRD(X-ray diffraction), BET(Brunauer, Emmett and Teller spcific surface area me...