| 滴加顺序对制备酯加氢催化剂Cu-Zn-Al-Ba的影响 | |
| Effect of Dropping Sequence on the Preparation of Cu-Zn-Al-Ba Catalyst for Hydrogenation of Fatty Acid Esters | |
| 摘要: 采用共沉淀法以不同的滴加混合顺序制备了新型高效无铬Cu-Zn-Al-Ba催化剂,通过XRD、SEM、BET、H2-TPR和TG等表征方式进行了分析,对其前驱体、焙烧后和还原后催化剂物相进行分析研究,探究了相同条件下不同滴加混合顺序对催化剂结构与催化性能的影响,同时考察了催化剂对C12~C18脂肪酸甲酯加氢制醇的催化性能以及重复利用性。结果表明,以混合盐溶液滴加沉淀剂所制备的无铬Cu-Zn-Al-Ba催化剂R-cat具有较好的酯加氢催化活性和稳定性。在230℃,3MPa氢压的反应条件下,R-cat催化C12~C18脂肪酸甲酯加氢制醇的收率和选择性都高于90%,催化剂重复利用5次,仍保持较高的催化活性。 | |
| 关键词: Cu-Zn-Al-Ba催化剂 滴加顺序 加氢 脂肪醇 硬脂酸甲酯 | |
| 基金项目: 江苏省重点研发计划(产业前瞻与共性关键技术)(No.BE2015204)资助项目。 | |
| Abstract: Novel highly efficient chromium free Cu-Zn-Al-Ba catalysts were prepared by adjusting dropping sequence in the process of co-precipitation, and characterized by XRD, SEM, BET, H2-TPRand TG. The effect of different dropping sequence on the structure and catalytic activities of the catalysts at the same conditions was studied by analyzing catalyst precursors, the roasting intermediates and the reduction products. The catalytic activity and reusability of the catalysts were investigated by the hydrogenation of C12~C18 fatty acid methyl esters for fatty alcohols synthesis. The results demonstrated that the chromium free Cu-Zn-Al-Ba catalysts prepared by adding mixed salt solution to precipitation agent showed good catalytic performance in the hydrogenation reactions. The yields and selectivities of the fatty alcohols were found to be more than 90% under 3MPa H2 pressure at reaction temperature 230 ℃. The catalysts could maintain high catalytic activity when reused for 5 times. | |
| Keywords: Cu-Zn-Al-Ba catalyst dropping sequence hydrogenation fatty alcohol methyl octadecanoate | |
| 投稿时间：2016-01-19 修订日期：2016-03-31 | |
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| 蒋尊标,范明明,张萍波,江彪.滴加顺序对制备酯加氢催化剂Cu-Zn-Al-Ba的影响[J].无机化学学报,2016,32(6):1047-1054. | |
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