Promoting effects of MgO, (NH4)(2)SO4 or MoO3 modification in oxidative esterification of methacrolein over Au/Ce0.6Zr0.4O2-based catalysts
文献类型：期刊论文
| 作者 | Li, Yuchao1,2; Wang, Lei1; Yan, Ruiyi1; Han, Junxing1; Zhang, Suojiang1 |
| 刊名 | CATALYSIS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2016 |
| 卷号 | 6期号:14页码:5453-5463 |
| ISSN号 | 2044-4753 |
| 英文摘要 | MgO, (NH4)(2)SO4 or MoO3-modified Ce0.6Zr0.4O2-supported gold catalysts were synthesized and studied for the oxidative esterification of methacrolein with methanol to methyl methacrylate. Although the particle size distribution and oxidative state of the supported Au showed almost no change before and after Ce0.6Zr0.4O2 modification as confirmed by TEM, Raman and XPS technologies, all of the modified Au/Ce0.6Zr0.4O2 catalysts demonstrated highly improved catalytic activities. H-2-TPR patterns indicated that the amounts of low-temperature active oxygen species increased in the MgO-and MoO3-modified catalysts. At the same time, the strong interaction between gold and Ce-Zr oxides in the MgO-modified catalyst and the charge transfer between Mo6+ and Ce3+ in the MoO3-modified catalyst were evidenced by XPS characterization. Based on the enhanced synergetic effects between the Au nanoparticles and the support for oxygen activation, the MgO-promoted Au catalyst presented the best performance with a methacrolein conversion of 98% and a methyl methacrylate selectivity of 90% in the absence of a base at 80 degrees C for 2 h of reaction. Differing from MgO and MoO3, (NH4)(2)SO4 modification simultaneously increased the acid-base properties of the catalyst and then increased the activity of the catalyst due to the promoted formation of the intermediate hemiacetal. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Physical |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | CO OXIDATION ; GOLD NANOPARTICLES ; SOLID-SOLUTIONS ; BIFUNCTIONAL CATALYST ; MIXED OXIDES ; ALDEHYDES ; ALCOHOLS ; ESTERS ; CEO2 ; COMBUSTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000379438000021 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/21257]  |
| 专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yuchao,Wang, Lei,Yan, Ruiyi,et al. Promoting effects of MgO, (NH4)(2)SO4 or MoO3 modification in oxidative esterification of methacrolein over Au/Ce0.6Zr0.4O2-based catalysts[J]. CATALYSIS SCIENCE & TECHNOLOGY,2016,6(14):5453-5463. |
| APA | Li, Yuchao,Wang, Lei,Yan, Ruiyi,Han, Junxing,&Zhang, Suojiang.(2016).Promoting effects of MgO, (NH4)(2)SO4 or MoO3 modification in oxidative esterification of methacrolein over Au/Ce0.6Zr0.4O2-based catalysts.CATALYSIS SCIENCE & TECHNOLOGY,6(14),5453-5463. |
| MLA | Li, Yuchao,et al."Promoting effects of MgO, (NH4)(2)SO4 or MoO3 modification in oxidative esterification of methacrolein over Au/Ce0.6Zr0.4O2-based catalysts".CATALYSIS SCIENCE & TECHNOLOGY 6.14(2016):5453-5463. |
入库方式： OAI收割
来源：过程工程研究所
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