scholarly journals Zeolite-assisted core-shell redox catalysts for efficient light olefin production via cyclohexane redox oxidative cracking

2021 ◽  
Vol 409 ◽  
pp. 128192
Author(s):  
Fang Hao ◽  
Yunfei Gao ◽  
Junchen Liu ◽  
Ryan Dudek ◽  
Luke Neal ◽  
...  
2009 ◽  
Vol 130 (3-4) ◽  
pp. 630-636 ◽  
Author(s):  
Suk-Hwan Kang ◽  
Jong Wook Bae ◽  
P. S. Sai Prasad ◽  
Seon-Ju Park ◽  
Kwang-Jae Woo ◽  
...  

2019 ◽  
Vol 39 (3) ◽  
pp. 157-177 ◽  
Author(s):  
Ehsan Kianfar

AbstractThe present review focuses on a comparison and assessment of zeolite catalyst performance of dimethyl ether and light olefin production through methanol. Dimethyl ether is a clean fuel which needs diverse processes to be produced. Methanol to dimethyl ether is a very novel process which offers considerable advantages versus additional processes for the production of dimethyl ether. The corresponding fixed-bed reactors compose the most important section of such a process. Production of dimethyl ether by the mentioned process is of high importance since it can be catalytically transferred to a substance with the value of propylene. Furthermore, in case of capability to transfer low-purity methanol into dimethyl ether, less expensive methanol can be consequently achieved with higher value added. In the petrochemical industry, light olefins, for example, ethylene and propylene, can be used as raw materials for the production of polyolefin. The present review aims to produce dimethyl ether in order to reach olefin substances, initially conducting a compressive assessment on production methods of olefin substances.


2019 ◽  
Vol 58 (13) ◽  
pp. 5131-5139 ◽  
Author(s):  
Jincan Huang ◽  
Wei Wang ◽  
Zhaoyang Fei ◽  
Qing Liu ◽  
Xian Chen ◽  
...  

2015 ◽  
Vol 15 (10) ◽  
pp. 8311-8317 ◽  
Author(s):  
Joongwon Lee ◽  
Seungwon Park ◽  
Ung Gi Hong ◽  
Jin Oh Jun ◽  
In Kyu Song

Surface modification of phosphorous-containing porous ZSM-5 catalyst (P/C-ZSM5-Sil.(X)) was carried out by a chemical liquid deposition (CLD) method using tetraethyl orthosilicate (TEOS) as a silylation agent. Different amount of TEOS (X = 5, 10, 20, and 30 wt%) was introduced into P/C-ZSM5il.(X) catalysts for surface modification. The catalysts were used for the production of light olefins (ethylene and propylene) through catalytic cracking of C5 raffinate. It was found that external surface acidity of P/C-ZSM5-Sil.(X) catalysts significantly decreased with increasing TEOS content. In the catalytic reaction, both conversion of C5 raffinate and yield for light olefins showed volcano-shaped curves with respect to TEOS content. Among the catalysts tested, P/C-ZSM5- Sil.(20) catalyst exhibited the best catalytic performance in terms of conversion of C5 raffinate and yield for light olefins. Thus, an optimal TEOS content was required for CLD treatment to maximize light olefin production in the catalytic cracking of C5 raffinate over P/C-ZSM5-Sil.(X) catalysts.


2021 ◽  
Vol 46 (5) ◽  
pp. 3669-3683
Author(s):  
Yuping Li ◽  
Ying Li ◽  
Xinghua Zhang ◽  
Chenguang Wang ◽  
Xi Li ◽  
...  

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