Cuβ催化剂上氧化羰基合成碳酸二甲酯的原位漫反射红外光谱研究

王增竹 黄守莹 申勇立 王胜平 马新宾

引用本文: 王增竹, 黄守莹, 申勇立, 王胜平, 马新宾. Cuβ催化剂上氧化羰基合成碳酸二甲酯的原位漫反射红外光谱研究[J]. 燃料化学学报, 2012, 40(10): 1212-1221. shu
Citation:  WANG Zeng-zhu, HUANG Shou-ying, SHEN Yong-li, WANG Sheng-ping, MA Xin-bin. In situ DRIFTS study on the oxidative carbonylation of methanol to dimethyl carbonate over Cuβ catalyst[J]. Journal of Fuel Chemistry and Technology, 2012, 40(10): 1212-1221. shu

Cuβ催化剂上氧化羰基合成碳酸二甲酯的原位漫反射红外光谱研究

    通讯作者: 王胜平,Tel:022-87401818,Fax:022-87401818,E-mail:spwang@tju.edu.cn
  • 基金项目:

    国家自然科学基金(20876112,20936003) (20876112,20936003)

    高等学校博士学科点专项科研基金(20090032110021) (20090032110021)

    高等学校学科创新引智计划(B06006)。 (B06006)

摘要: 采用原位漫反射红外光谱法研究了Cuβ催化剂上氧化羰基合成碳酸二甲酯(DMC)的反应机理,考察了甲醇、一氧化碳和DMC的单独吸附及混合气吸附。结果表明,Cuβ催化剂上只存在一种活性位,位于六元环中;氧气能够氧化吸附态的甲醇产生甲氧基和水;DMC吸附在Cuβ催化剂上时,以羰基中的氧原子吸附在活性位上更加稳定;反应存在生成单甲氧基物种和双甲氧基物种两条路径,单甲氧基物种与CO反应生成单甲基碳酸盐物种(MMC),MMC再与甲氧基反应生成DMC;CO插入双甲氧基物种也可以得到DMC。在Cuβ催化剂上更倾向于进行CO插入双甲氧基物种这一路径。

English

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  • 收稿日期:  2012-03-27
  • 网络出版日期:  2012-05-25
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