| 孙闻东,赵振波.WO3／ZrO2固体强酸催化剂上异丁烷—丁烯烷基化反应的研究：Ⅲ.超 …[J].分子催化,2000,(2):111-118 |
| WO3／ZrO2固体强酸催化剂上异丁烷—丁烯烷基化反应的研究：Ⅲ.超 … |
|
| 修订日期：1999-10-18 |
| DOI： |
| 中文关键词: 固体强酸 异丁烷 丁烯 烷基化 催化剂 二氧化锆 |
| 英文关键词:WO\-3/ZrO\-2,Strong solid acid,Superfine ZrO\-2,Isobutane/Butene alkylation |
| 基金项目:国家自然科学基金，29792076， |
| 孙闻东 赵振波 |
| 中国科学院长春应用化学研究所,长春,130022 |
| 摘要点击次数: 1251 |
| 全文下载次数: 24 |
| 中文摘要: |
| 制备了以超细ＺrＯ２为载体的ＷＯ３／ＺrＯ２、ＳＯ４＾２－／ＺrＯ２、ＭoＯ３／Ｚr Ｏ２固体强酸催化剂，并用ＸＲＤ、ＤＴＡ－ＴＧ、Ｈ２－ＴＰＲ、ＮＨ３－ＴＰＤ等方法表征了其晶型结构、表面状态和酸性。结果表明，超细ＺrＯ２中的Ｔ－晶相所占比例虽有所下降，但具有更大的比表面积、酸强度和对金属氧化物的负载能力，且酸强度随焙烧温度升高而增强，表明其表面状态亦有较大变化。研究了以超细ＺrＯ２为载体的固体强酸催化 |
| 英文摘要: |
| A series of WO\-3/ZrO\-2 , SO\-4\+\{2-\}/ZrO\-2, and MoO\-3/ZrO\-2 strong solid acids were prepared. Their crystal structure, surface state and acidity were determined by XRD, TG\|DTA, H\-2\|TPR and NH\-3\|TPD. The results revealed that superfine ZrO\-2 mainly exists in tetragonal phase, however, the amount of T \|phase ZrO\-2 decreases, but it has a larger specific area, acid amounts and loading capacity as compared with catalyst prepared by traditional approach using Zr(OH)\-4 as carrier. Acid strength of the catalyst increases with the calcination temperature, which indicates that its surface state has changed significantly. The isobutane alkylation of n \|butene catalysed by various catalysts has been investigated. Experimental results indicated that better olefin conversions are reached than that over catalyst prepared by traditional \{Zr(OH)\-4\} as carriers. C\-8\+0 selectivity decreases due to the formation of more cracking products of C\-5~C\-7. |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
