| Cu-OMS-2催化甲醇氧化羰基化合成碳酸二甲酯 |
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| 引用本文： | 周烜,陈启明,杨小俊.Cu-OMS-2催化甲醇氧化羰基化合成碳酸二甲酯[J].石油化工,2011,40(4):369. |
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| 作者姓名： | 周烜 陈启明 杨小俊 |
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| 作者单位： | 武汉工程大学绿色化工过程教育部重点实验室; |
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| 基金项目： | 国家自然科学基金重点项目(20936003); 湖北省自然科学基金项目(2008CDA009) |
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| 摘 要： | 采用固态离子交换法制备了Cu-OMS-2催化剂,并通过XRD,SEM,XPS对催化剂进行了表征,将其用于甲醇氧化羰基化合成碳酸二甲酯(DMC)反应,分析了催化剂的物相和形貌对其催化活性的影响。实验结果表明,Cu-OMS-2催化剂对合成DMC有较好的催化性能,其原因是:(1)CuCl以薄片形式均匀堆积排列分布在载体表面,有利于反应物的吸附;(2)催化剂中Cu2+和Cu+以合适的比例存在时有利于DMC的合成。采用CuCl负载量(质量分数)为25%、500℃下焙烧5h制备的Cu-OMS-2催化剂,在优化的反应条件下,DMC的收率达84.6%。
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| 关 键 词： | 碳酸二甲酯 甲醇 氧化羰基化 锰氧八面体分子筛 铜催化剂 |
Oxidative Carbonylation of Methanol to Dimethyl Carbonate over Cu-OMS-2 Catalyst |
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| Zhou Xuan,Chen Qiming,Yang Xiaojun.Oxidative Carbonylation of Methanol to Dimethyl Carbonate over Cu-OMS-2 Catalyst[J].Petrochemical Technology,2011,40(4):369. |
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| Authors: | Zhou Xuan Chen Qiming Yang Xiaojun |
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| Affiliation: | Zhou Xuan,Chen Qiming,Yang Xiaojun(Key Laboratory for Green Chemical Process of Ministry of Education,Wuhan Institute of Technology,Wuhan Hubei 430073,China) |
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| Abstract: | Cu-OMS-2 catalysts were prepared by solid-state ion-exchange method and used in oxidative carbonylation of methanol to dimethyl carbonate.The catalysts were characterized by means of XRD,SEM and XPS.The effects of the crystalline phase and structure on the catalyst activity in the oxidative carbonylation were investigated.The results showed that the good catalytic performance of Cu-OMS-2 catalyst could be attributed to the appropriate proportion between Cu2+ and Cu+ in the catalyst.CuCl existed in thin slic... |
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| Keywords: | dimethyl carbonate methanol oxidative carbonylation manganese-oxygen octahedral molecular sieve copper catalyst |
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