Deactivation behavior on VPO and VPO-Zr catalysts in the aldol condensation of methyl acetate and formaldehyde
文献类型：会议论文
| 作者 | Yang, Dan; Wang, Gang; Wu, Hui; Guo, Xinpeng; Zhang, Suojiang; Li, Zengxi; Li, Chunshan |
| 出版日期 | 2018 |
| 会议日期 | OCT 16-20, 2017 |
| 会议地点 | Tianjin Univ, Tianjin, PEOPLES R CHINA |
| 关键词 | VPO PHOSPHORUS OXIDE CATALYSTS VPO-Zr N-BUTANE OXIDATION Aldol condensation VANADIUM PYROPHOSPHATE OXIDES Deactivation behavior ACRYLIC-ACID Carbon formation ACETIC-ACID MALEIC-ANHYDRIDE METHACRYLIC-ACID PROPIONIC-ACID COKE FORMATION PROPANE |
| 卷号 | 316 |
| 期号 | SI |
| DOI | 10.1016/j.cattod.2018.06.019 |
| 页码 | 122 ; 128 |
| 英文摘要 | Improvement in activity for the Zr doped VPO catalyst appears to be a general observation in aldol condensation of methyl acetate and formaldehyde to methyl acrylate. The deactivation behavior significantly differs between VPO and VPO-Zr catalysts. In this work, the deactivation/reactivation behavior and carbon formation in aldol condensation on VPO and VPO-Zr catalysts were investigated. After partial deactivation of the conversion of methyl acetate and formaldehyde to methyl acrylate with a fixed-bed reactor, the deactivated catalysts were fractionated from the reactor. The samples were then analyzed by spectroscopic techniques, gas adsorption measurements and thermogravimetry. The VPO-Zr catalyst showed differences in deactivation/reactivation behavior from the VPO catalyst under same reaction conditions. This finding could be partially ascribed to different coke locations in the deactivated catalysts with varied porosity. The I-V (4+) /I-V (5+) ratio of V atom remarkably differed among fresh, used, and refreshed catalysts, which could be a key factor affecting catalyst deactivation. The relations of carbon formation and reaction time were fitted by empirical Voorhies equation over VPO and VPO-Zr catalysts. |
| 源文献作者 | Catalysis Soc China, Hebei Univ Technol, China Natl Offshore Oil Corp Tianjin Res & Design Inst Chem Ind |
| 会议录 | Article; Proceedings Paper
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| WOS记录号 | WOS:000443966900017 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/28945]  |
| 专题 | 中国科学院过程工程研究所 |
| 推荐引用方式 GB/T 7714 | Yang, Dan,Wang, Gang,Wu, Hui,et al. Deactivation behavior on VPO and VPO-Zr catalysts in the aldol condensation of methyl acetate and formaldehyde[C]. 见:. Tianjin Univ, Tianjin, PEOPLES R CHINA. OCT 16-20, 2017. |
入库方式： OAI收割
来源：过程工程研究所
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