Direct synthesis of HZSM-5 from natural clay

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 研究所（批量导入）

	Direct synthesis of HZSM-5 from natural clay
	Pan, Feng1 ; Lu, Xuchen 1,3; Zhu, Qingshan 1; Zhang, Zhimin 1; Yan, Yan 1; Wang, Tizhuang 1; Chen, Shiwei 1,2
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	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	://WOS:000349447200100
语种	英语
WOS记录号	WOS:000349447200100
公开日期	2015-04-01
内容类型	期刊论文
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.