Effect of ZnO additives and acid treatment on catalytic performance of Pt/WO3/ZrO2 for n-C-7 hydroisomerization
文献类型：期刊论文
| 作者 | Liu, Yan; Guan, Yejun; Li, Can; Lian, Juan; Gan, Geok Joo; Lim, Eng Chew; Kooli, Fethi |
| 刊名 | journal of catalysis
 |
| 出版日期 | 2006-11-15 |
| 卷号 | 244期号:1页码:17-23 |
| 关键词 | Pt/WO3-ZrO2 catalysts ZnO acid treatment n-heptane hydroisomerization pyridine-FTIR |
| 英文摘要 | the effect of wo3 (5-50 wt%) and zno (0.7-22 wt%) on the catalytic properties of pt/wo3/(zno)-zro2 for n-heptane (n-c-7) hydroisomerization was investigated. the optimized wo3 and zno contents are 20 wt% and 3.4 wt%, respectively. the catalytic performance is achieved at 81 % n-c-7 conversion and 89% c-7 isomer selectivity at 250 degrees c, which is reproducible and can be kept constant over 82 h under reaction conditions. both wo3 and zno can stabilize the tetragonal phase of zro2. the bronsted acid-to-lewis acid ratio should be optimized to achieve high catalytic performance. the activity for pt/wo3/zro2 using zr(oh)(4) as the catalyst support (n-c-7 conversion, 88% at 250 degrees c) is much higher than that for pt/wo3/zro2 with zro2 as the support (n-c-7 conversion, 9% at 250 degrees c) with the same pt and wo3 loadings. bet, sem-edx, and pyridine-ftir analyses show that acid treatment can successfully enhance the surface area (from 73 to 91 m(2)/g), increase the number of bronsted acid sites, and lower the surface zn:zr ratio (from 0.43 to 0.15) for zno-zro2 with 22 wt% zno. the yield of c-7 isomers is increased from nil to 47% at 300 degrees c on pt/wo3/zno-zro2 catalyst after acid treatment. it is suggested that n-heptane hydroisomerization activity is related to acidity, surface area, and crystalline phase of zro2. (c) 2006 elsevier inc. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; engineering, chemical |
| 研究领域[WOS] | chemistry ; engineering |
| 关键词[WOS] | n-heptane isomerization ; tungsten-oxide ; modified zirconia ; hexadecane ; sites ; hydrogenation ; oxynitrides ; promotion ; zeolites ; wo3-zro2 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000242130100003 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/140277]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Inst Chem & Engn Sci, Singapore 627833, Singapore 2.Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yan,Guan, Yejun,Li, Can,et al. Effect of ZnO additives and acid treatment on catalytic performance of Pt/WO3/ZrO2 for n-C-7 hydroisomerization[J]. journal of catalysis,2006,244(1):17-23. |
| APA | Liu, Yan.,Guan, Yejun.,Li, Can.,Lian, Juan.,Gan, Geok Joo.,...&Kooli, Fethi.(2006).Effect of ZnO additives and acid treatment on catalytic performance of Pt/WO3/ZrO2 for n-C-7 hydroisomerization.journal of catalysis,244(1),17-23. |
| MLA | Liu, Yan,et al."Effect of ZnO additives and acid treatment on catalytic performance of Pt/WO3/ZrO2 for n-C-7 hydroisomerization".journal of catalysis 244.1(2006):17-23. |
入库方式： OAI收割
来源：大连化学物理研究所
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