| 过渡金属改性HZSM-5催化剂的乳酸乙酯脱水性能 |
| |
| 引用本文： | 张卓,林鹿,施建斌.过渡金属改性HZSM-5催化剂的乳酸乙酯脱水性能[J].化学反应工程与工艺,2009,25(6). |
| |
| 作者姓名： | 张卓 林鹿 施建斌 |
| |
| 作者单位： | 华南理工大学制浆造纸工程国家重点实验室,广东广州,510640 |
| |
| 基金项目： | 国家自然科学基金，教育部高等学校博士学科点专项科研基金，国家高技术研究发展计划(863计划)，国家科技支撑计划 |
| |
| 摘 要： | 分别采用FeCl3·6H2O和MnCl2·4H2O对HzsM-5分子筛进行改性,得到Fe-ZSM-5和Mn-ZsM-5催化剂,采用x射线衍射(xRD)和傅立叶红外光谱(FT-IR)对改性前后的样品进行表征,并考察了HZSM-5分子筛改性前后在乳酸乙酯脱水制丙烯酸乙酯反应中的催化性能.结果表明,与HZSM-5相比,改性后的Fe-ZSM-5和Mn-ZSM-5的结晶度下降,硅铝比降低,活性降低,选择性增加,且Mn-ZSM-5的催化性能优于Fe-ZSM-5的催化性能,在180℃下反应3 h,丙烯酸乙酯收率达到14.65%.
|
| 关 键 词： | 分子筛 改性 乳酸乙酯 脱水 |
Catalytic Dehydration of Ethyl Lactate over HZSM-5 Modified with Transition Metal |
| |
| Zhang Zhuo,Lin Lu,Shi Jianbin.Catalytic Dehydration of Ethyl Lactate over HZSM-5 Modified with Transition Metal[J].Chemical Reaction Engineering and Technology,2009,25(6). |
| |
| Authors: | Zhang Zhuo Lin Lu Shi Jianbin |
| |
| Abstract: | The catalysts Fe-ZSM-5 and Mn-ZSM-5 were prepared by modifying HZSM-5 molecular sieve using FeCl3 · 6H2O and MnCl2 · 4H2O, respectively, and were characterized by means of X-ray diffraction (XRD) and Fourier infrared spectroscopy (FT-IR). Then the catalytic performance of HZSM-5 molecular sieve, Fe-ZSM-5 and Mn-ZSM-5 for conversion of ethyl lactate to ethyl acrylate were investigated. The results showed that, compared with HZSM-5 molecular sieve, the degree of crystallization, the molar ratio of SiO2 to Al2O3 and the activity of Fe-ZSM-5 and Mn-ZSM-5 decreased and the selectivity increased. The calalytic performance of Mn-ZSM-5 was better than that of Fe-ZSM-5 and the yield of ethyl acrylate reached 14.65% after reaction 3 h at 180 ℃. |
| |
| Keywords: | molecular sieve modified ethyl lactate dehydration |
| 本文献已被 万方数据 等数据库收录！ |
|
