摘要
进行了吡啶－２－羧酸钴配合物催化液相氧化羰基化合成碳酸二甲酯研究。试验结果表明，在催化剂浓度０１１ｍｏｌ／Ｌ、Ｎ，Ｎ－二甲基乙酰胺助剂浓度０８０ｍｏｌ／Ｌ、１２０～１３０℃、ｎ（ＣＯ）∶ｎ（Ｏ２）为２∶１、反应时间８ｈ的反应条件下甲醇转化率为１０３％，选择性达９９％以上。腐蚀测定表明，钴配合物体系对Ｑ２３５－Ａ钢的年腐蚀率仅为０１７ｍｍ／ａ。
The oxidative carbonylation of methanol to
dimethyl carbonate using cobalt
bis(2-pyridinecarboxylato-N1,O2)-tetrahydrate(Co(Pic)2(H2O)4)as catalyst was
studied.The effect of catalyst concentration,reaction time and
temperature is discussed.The results show that the complex
(Co(Pic)2(H2O)4) is a high activity,high selectivity and low
corrosive catalyst as compared with CuCl.In the case of
011 mol/L Co(Pic)2(H2O)4,08mol/L co-solvent N,N-dimethylacetamide,reaction
temperature 120130 ,n(Co)n(O2)=21 and reaction time 8 h,the
conversion of methanol is 103% and the selectivity is about
99%.The corrosion rate of Co(Pic)2(H2O)4 on Q235-A steel
during reaction at room temperature is 017 mm/a.
出处
《石油化工》
CAS
CSCD
北大核心
1999年第7期440-443,共4页
Petrochemical Technology
关键词
吡啶
羧酸钴
碳酸二甲酯
羰化
dimethyl carbonate,cobalt
bis(2-pyridinecarboxylato-N1,O2)-tetrahydrate,carbonylation
