Direct synthesis of HZSM-5 from natural clay
文献类型：期刊论文
| 作者 | Pan, Feng1 ; Lu, Xuchen1,3; Zhu, Qingshan1; Zhang, Zhimin1; Yan, Yan1; Wang, Tizhuang1; Chen, Shiwei1,2
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| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2015 |
| 卷号 | 3期号:7页码:4058-4066 |
| 关键词 | COAL-SERIES KAOLINITE ZSM-5 TYPE ZEOLITES HYDROCARBON FORMATION CATALYTIC-ACTIVITY REACTION-MECHANISM ORGANIC TEMPLATE COLLOIDAL SILICA FAST PYROLYSIS METHANOL ACID |
| ISSN号 | 2050-7488 |
| 其他题名 | J. Mater. Chem. A |
| 中文摘要 | Highly crystalline HZSM-5 zeolite was directly synthesized through the steam-assisted conversion (SAC) approach using kaolin as the raw material, where NH3 center dot H2O was used as an alkaline vapor source. The catalytic performance of the obtained HZSM-5 with SiO2/Al2O3 ratios from 25.67 to 80 was investigated for converting methanol to light olefins (MTO). The results indicated that NH3 center dot H2O provided alkalinity to dissolve the raw materials and NH4+ cations to balance the charge of the framework. Highly crystalline HZSM-5 with crystal size in the range of 0.8-1 mu m was obtained within 1.0 h at 190 degrees C. The obtained HZSM-5 possessed high S-BET (above 440 m(2) g(-1)) and high total pore volume (above 0.3 cm(3) g(-1)). The acidity of the HZSM-5 was affected by the SiO2/Al2O3 molar ratio and residual metallic elements (such as Fe, Ti, Ca, P, etc.) in the leached metakaolin. The existence of the metallic elements similarly affected HZSM-5 modified with metal cations. HZSM-5 with a higher SiO2/Al2O3 molar ratio was favourable for the formation of C2-C4 olefins. The selectivity of C2-C4 olefins reached 68% when the SiO2/Al2O3 molar ratio was 68.79. This productive and facile method is inexpensive because the ammonium and calcination ion exchange processes are unnecessary. |
| 英文摘要 | Highly crystalline HZSM-5 zeolite was directly synthesized through the steam-assisted conversion (SAC) approach using kaolin as the raw material, where NH3 center dot H2O was used as an alkaline vapor source. The catalytic performance of the obtained HZSM-5 with SiO2/Al2O3 ratios from 25.67 to 80 was investigated for converting methanol to light olefins (MTO). The results indicated that NH3 center dot H2O provided alkalinity to dissolve the raw materials and NH4+ cations to balance the charge of the framework. Highly crystalline HZSM-5 with crystal size in the range of 0.8-1 mu m was obtained within 1.0 h at 190 degrees C. The obtained HZSM-5 possessed high S-BET (above 440 m(2) g(-1)) and high total pore volume (above 0.3 cm(3) g(-1)). The acidity of the HZSM-5 was affected by the SiO2/Al2O3 molar ratio and residual metallic elements (such as Fe, Ti, Ca, P, etc.) in the leached metakaolin. The existence of the metallic elements similarly affected HZSM-5 modified with metal cations. HZSM-5 with a higher SiO2/Al2O3 molar ratio was favourable for the formation of C2-C4 olefins. The selectivity of C2-C4 olefins reached 68% when the SiO2/Al2O3 molar ratio was 68.79. This productive and facile method is inexpensive because the ammonium and calcination ion exchange processes are unnecessary. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Chemistry ; Energy & Fuels ; Materials Science |
| 关键词[WOS] | COAL-SERIES KAOLINITE ; ZSM-5 TYPE ZEOLITES ; HYDROCARBON FORMATION ; CATALYTIC-ACTIVITY ; REACTION-MECHANISM ; ORGANIC TEMPLATE ; COLLOIDAL SILICA ; FAST PYROLYSIS ; METHANOL ; ACID |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000349447200100 |
| 公开日期 | 2015-04-01 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/11813]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 3.United Res Ctr Resources & Mat, Wuhai 016000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan, Feng,Lu, Xuchen,Zhu, Qingshan,et al. Direct synthesis of HZSM-5 from natural clay[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(7):4058-4066. |
| APA | Pan, Feng.,Lu, Xuchen.,Zhu, Qingshan.,Zhang, Zhimin.,Yan, Yan.,...&Chen, Shiwei.(2015).Direct synthesis of HZSM-5 from natural clay.JOURNAL OF MATERIALS CHEMISTRY A,3(7),4058-4066. |
| MLA | Pan, Feng,et al."Direct synthesis of HZSM-5 from natural clay".JOURNAL OF MATERIALS CHEMISTRY A 3.7(2015):4058-4066. |
入库方式： OAI收割
来源：过程工程研究所
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