A Novel Preparation of SAPO-18 Molecular Sieve with Enhanced Stability for Dimethyl Ether to Olefins | |
Department | 清洁能源化学与材料实验室 |
Zhao, Dongpu1; Zhang, Yan1; Peng, Yanhua1; Yu JQ(于健强)1,2; Yu JQ(于健强) | |
2016 | |
Source Publication | Catalysis Letters |
ISSN | 1011-372X |
Volume | 146Issue:11Pages:2261-2267 |
Abstract | SAPO-18 molecular sieve is an important catalyst for dimethylether-to-olefins (DTO) reaction. Although the conventional synthesized SAPO-18 using N,N′-diisopropylethylamine (DIEA) alone exhibits nanoparticles and better catalytic performance due to the weaker diffusion resistance, its high cost of preparation and difficult separation of the powder limit the industrial process of this type of molecular sieve. Therefore, reducing the cost and increasing the particle size appropriately become the key issues for its practical application. In this study, SAPO-18 catalysts were synthesized hydrothermally using mixture of triethylamine (TEA) and a small amount of DIEA as templates. The results revealed that fairly pure SAPO-18 molecular sieve with particle size of approximately 1.0 μm could be synthesized under the initial gel composition as: xDIEA:(1.4−x)TEA: 1.0 Al2O3: 0.9 P2O5:0.6SiO2:50H2O, where x varies from 0.2 to 0.6. Furthermore, the catalytic performance for DTO reaction over the novel synthesized SAPO-18 catalysts showed higher selectivities to light olefins and much lower coke deposition than the conventional synthesized SAPO-18 using DIEA alone. |
Keyword | Sapo-18 Double Templates Trimethylamine Dimethylether-to-olefins n n '-diisopropylethylamine |
Subject Area | 材料科学与物理化学 |
DOI | 10.1007/s10562-016-1854-y |
Funding Organization | China Postdoctoral Science Foundation (No. 2014M551869);Shandong Excellent Young Scientist Research Award Fund (No. BS2015CL002);Qingdao Postdoctoral Application Research Project Fund |
Indexed By | SCI |
If | 2.799 |
Language | 英语 |
compositor | 第二作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/21096 |
Collection | 清洁能源化学与材料实验室 |
Corresponding Author | Yu JQ(于健强) |
Affiliation | 1.Qingdao Univ, Sch Chem & Chem Engn, Collaborat Innovat Ctr Marine Biomass Fiber Mat &, 308 Ningxia Rd, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China |
Recommended Citation GB/T 7714 | Zhao, Dongpu,Zhang, Yan,Peng, Yanhua,et al. A Novel Preparation of SAPO-18 Molecular Sieve with Enhanced Stability for Dimethyl Ether to Olefins[J]. Catalysis Letters,2016,146(11):2261-2267. |
APA | Zhao, Dongpu,Zhang, Yan,Peng, Yanhua,Yu JQ,&于健强.(2016).A Novel Preparation of SAPO-18 Molecular Sieve with Enhanced Stability for Dimethyl Ether to Olefins.Catalysis Letters,146(11),2261-2267. |
MLA | Zhao, Dongpu,et al."A Novel Preparation of SAPO-18 Molecular Sieve with Enhanced Stability for Dimethyl Ether to Olefins".Catalysis Letters 146.11(2016):2261-2267. |
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20162261-2267.pdf(1135KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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