欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
通过气相色谱和傅里叶红外光谱仪分析,考察了不同仲胺化合物对甲醛和丙醛缩合制备甲基丙烯醛的催化性能.结果表明,二乙胺催化效率最高,甲基丙烯醛的收率高达94%.进一步研究了以二乙胺为催化剂缩合制备甲基丙烯醛的反应动力学规律,得出反应级数为2.456,反应活化能和指前因子分别为62.45kJ/mol和8.182×107（mol/L）-1.456/s.并通过在线红外光谱仪和气质联用仪证实生成了中间体曼尼希碱,为进一步研究反应机理奠定了基础.
英文摘要：
A series of second amines were used to catalyze the synthesis of methacrolein from formaldehyde and propionaldehyde via Mannich reactionBy using diethylamine,the highest yield of 94% was obtained.The kinetic model was obtained by analysis of the reaction process.The parameters in the model were determined：reaction order 2.456,activation energy 62.45 kJ/mol and frequency factor 8.182×107（mol/L）-1.456/s.In situ FT-IR spectroscopy was introduced to monitor the concentration of compounds in real time during the reaction.The samples taken in different reaction times were analyzed by GC-MS,and the intermediate Mannich base was detected,laying a foundation for the reaction mechanism.
同期刊论文项目
同项目期刊论文
Urea as an efficient and reusable catalyst for the glycolysis of poly(ethylene terephthalate) wastes
Condensation of methyl propionate with formaldehyde to methyl methacrylate over Cs-Zr-Mg/SiO2 cataly
1-Allyl-3-methylimidazolium halometallate ionic liquids as efficient catalysts for the glycolysis of
MgO-SBA-15 supported Pd-Pb catalysts for oxidative esterification of methacrolein with methanol to m
Post-combustion Carbon Capture with a Gas Separation Membrane: Parametric Study, Capture Cost, and E
Effect of cations and anions of ionic liquids on the production of 5-hydroxymethylfurfural from fruc
PEG400 modification of Keggin-type H4PMo11VO40-based catalysts for the selective oxidation of methac
Density prediction of mixtures of ionic liquids and molecular solvents using two new generalized mod
Densities and viscosities of the binary mixtures of 1-ethyl-3-methylimidazolium bis(trifluoromethyls
Density, viscosity, and conductivity of Lewis acidic 1-butyl- and 1-hydrogen-3-methylimidazoliumchlo
A new fragment contribution-corresponding states method for physicochemical properties prediction of
Effects of cations and anions of ionic liquids on the production of 5-hydroxymethylfurfural from fru
Density, Viscosity, and Conductivity of Lewis Acidic 1-Butyl- and 1-Hydrogen-3-methylimidazolium Chl
期刊信息
位置：