微米及纳米丝光沸石分子筛上二甲醚羰基化反应的积碳分析

催化学报 , 2013, 34(8): 1496-1503. doi: 10.1016/S1872-2067(12)60607-X

微米及纳米丝光沸石分子筛上二甲醚羰基化反应的积碳分析

薛会福 ^1, , 黄秀敏 ^2, , ^3, , 展恩胜 ^4, , 马猛 ^5, , 申文杰 ^6,

1.中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连116023

2.中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连116023

3.Hull Research and Technology Centre, BP Chemicals Limited, Hull HU128DS, UK

4.中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连116023

5.中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连116023

6.中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连116023

基金项目: the National Natural Science Foundation of China(20973166) 国家重点基础研究发展计划(2013CB933100) 国家自然科学基金(20973166) the National Basic Research Program of China(2013CB933100)

关键词：氢型丝光沸石 , 二甲醚 , 羰基化 , 晶体尺寸 , 积碳

Coking on micrometer-and nanometer-sized mordenite during dimethyl ether carbonylation to methyl acetate

Huifu Xue ^1, , Xiumin Huang ^2, , Evert Ditzel ^3, , Ensheng Zhan ^4, , Meng Ma ^5, , Wenjie Shen ^6,

1.中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连116023

2.中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连116023

3.Hull Research and Technology Centre, BP Chemicals Limited, Hull HU128DS, UK

4.中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连116023

5.中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连116023

6.中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连116023

Keywords： H-mordenite , Dimethyl ether , Carbonylation , Crystal size , Coking

对比研究了在传统微米尺寸和新结构纳米丝光沸石催化剂上二甲醚羰基化合成乙酸甲酯的反应行为.结果表明,通过减小分子筛的尺寸到纳米水平,可以有效提高反应物和产物到达或者脱离反应活性位的效率,从而提高了二甲醚的转化率；更重要的是,抑制了硬积碳的生成,使催化剂保持了更高的稳定性.

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