Synthesis of stacked spherical hierarchical SAPO-34 zeolite and its methanol to olefin catalytic performance

2022 ◽  
pp. 103414
Author(s):  
Zihan Zhou ◽  
Xingwen Wang ◽  
Rongli Jiang ◽  
Xueshuai Chen ◽  
Huilin Hou
Keyword(s):  
Catalytic Performance ◽  
Methanol To Olefin

Positive Role of Synthesis Method and Hard Template on the Catalytic Performance of SAPO-34 in Methanol to Olefin Reaction.

2020 ◽  
Vol 23 ◽  
Author(s):  
Sajjad Rimaz ◽  
Reza Katal
Keyword(s):  
Particle Size ◽  
Synthesis Method ◽  
Catalytic Performance ◽  
Hard Template ◽  
Structure Directing Agent ◽  
Positive Role ◽  
Methanol To Olefin ◽  
Dg Method ◽  
Synthesis Procedure

: In the present study, SAPO-34 particles were synthesized using hydrothermal (HT) and dry gel (DG) conversion methods in the presence of diethyl amine (DEA) as an organic structure directing agent (SDA). Carbon nanotubes (CNT) were used as hard template in the synthesis procedure to introduce transport pores into the structures of the synthesized samples. The synthesized samples were characterized with different methods to reveal effects of synthesis method and using hard template on their structure and catalytic performance in methanol to olefin reaction (MTO). DG conversion method results in smaller particle size in comparison with hydrothermal method, resulting in enhancing catalytic performance. On the other side, using CNT in the synthesis procedure with DG method results in more reduction in particle size and formation of hierarchical structure which drastically improves catalytic performance.

Synthesis of nano-sized SAPO-34 with morpholine-treated micrometer-seeds and their catalytic performance in methanol-to-olefin reactions

2020 ◽  
Vol 589 ◽  
pp. 117314 ◽  
Author(s):  
Chao Sun ◽  
Yaquan Wang ◽  
Aijuan Zhao ◽  
Xiao Wang ◽  
Cui Wang ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Methanol To Olefin

scholarly journals Fabrication of hierarchical ZnSAPO-34 by alkali treatment with improved catalytic performance in the methanol-to-olefin reaction

2018 ◽  
Vol 21 (1) ◽  
pp. 61-70 ◽  
Author(s):  
Chao Sun ◽  
Yaquan Wang ◽  
Zhao Wang ◽  
Hengbao Chen ◽  
Xiao Wang ◽  
...  
Keyword(s):  
Alkali Treatment ◽  
Catalytic Performance ◽  
Methanol To Olefin

Synthesis of MFI type ferrisilicate zeolite (Fe-MFI) nanocrystals by a dry gel conversion (DGC) method and their application to methanol to olefin (MTO) reactions

2017 ◽  
Vol 41 (6) ◽  
pp. 2235-2240 ◽  
Author(s):  
Koji Miyake ◽  
Yuichiro Hirota ◽  
Kaito Ono ◽  
Yoshiaki Uchida ◽  
Manabu Miyamoto ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Dry Gel Conversion ◽  
Conversion Method ◽  
Methanol To Olefin

Fe-MFI nanocrystals were synthesized by a dry gel conversion method and showed superior catalytic performance in methanol to olefin reactions.

Enhanced Catalytic Performance of Copper-Exchanged SAPO-34 Molecular Sieve in Methanol-to-Olefin Reaction

2010 ◽  
Vol 10 (1) ◽  
pp. 147-157 ◽  
Author(s):  
Sun Jung Kim ◽  
Ji Won Park ◽  
Kwang Young Lee ◽  
Gon Seo ◽  
Mee Kyung Song ◽  
...  
Keyword(s):  
Molecular Sieve ◽  
Catalytic Performance ◽  
Methanol To Olefin

Effect of zinc introduction on catalytic performance of ZSM-5 in conversion of methanol to light olefins

2014 ◽  
Vol 68 (9) ◽  
Author(s):  
Su-Hong Zhang ◽  
Zhi-Xian Gao ◽  
Shao-Jun Qing ◽  
Sheng-Yu Liu ◽  
Yan Qiao
Keyword(s):  
Methanol Conversion ◽  
Catalytic Performance ◽  
Light Olefins ◽  
Acidic Property ◽  
X Ray Diffraction ◽  
Light Olefin ◽  
X Ray ◽  
Olefin Conversion ◽  
Methanol To Olefin ◽  
Temperature Programmed

AbstractThe effect of Zn on the catalytic performance of ZSM-5 in the methanol-to-olefin conversion was investigated. The samples were characterised by X-ray diffraction, N2 adsorption, FTIR, temperature-programmed desorption of ammonia and water, and Py-IR. The experimental results revealed Znmodified ZSM-5 to show a lower selectivity to light olefin at the higher reaction temperature of 520°C but a higher selectivity to light olefin at lower temperatures. As a comparison, the catalytic performance of Ca-modified ZSM-5 for the methanol conversion is also given. From the above results, it is concluded that Zn may play another role in the methanol conversion in addition to tuning the surface acidic property after modification.

Synthesis, characterization and catalytic performance of SAPO-34 molecular sieves for methanol-to-olefin (MTO) reaction

2010 ◽  
Vol 6 (4) ◽  
pp. 596-605 ◽  
Author(s):  
Qian Wang ◽  
Lei Wang ◽  
Hui Wang ◽  
Zengxi Li ◽  
Hui Wu ◽  
...  
Keyword(s):  
Molecular Sieves ◽  
Catalytic Performance ◽  
Mto Reaction ◽  
Methanol To Olefin

An effective route to improve the catalytic performance of SAPO-34 in the methanol-to-olefin reaction

2012 ◽  
Vol 21 (4) ◽  
pp. 431-434 ◽  
Author(s):  
Guangyu Liu ◽  
Peng Tian ◽  
Qinhua Xia ◽  
Zhongmin Liu
Keyword(s):  
Catalytic Performance ◽  
Methanol To Olefin

Influence of Parameters on Catalytic Performance over Different Modified ZSM-5 Zeolite for the IMTO Process

2013 ◽  
Vol 648 ◽  
pp. 143-146
Author(s):  
Fei Liu ◽  
Ting Li ◽  
Peng Long Ye ◽  
Jian Xin Cao ◽  
Duan Hua Guo
Keyword(s):  
Raw Materials ◽  
Space Velocity ◽  
Catalytic Performance ◽  
Operating Conditions ◽  
Light Olefins ◽  
Molar Ratio ◽  
Process Conditions ◽  
Alternative Route ◽  
Methanol To Olefin ◽  
Low Rate

The methanol to olefin with iodide method (IMTO) is a potential and alternative route for its mild process conditions, which produces methyl iodide as intermediate. Methanol can be highly converted, yielding high rates of selectivity to light olefins, by its reaction over varies modified ZSM-5 zeolites. Efforts have been taken to optimize the reaction with respect to selectivity of olefin and conversion of methanol. Based on the analysis of gas chromatography, the following operating conditions were obtained: 250 °C of reaction temperature, CH3OH:HI:H2O=1:1:3 of the molar ratio of raw materials, 2.5 h-1 of methanol space velocity and 30 ml•min-1 of nitrogen low rate.

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