Catalytic Activity of Clay-Based Titanium Silicalite-1 Composite in Cyclohexanone Ammoximation

2009 ◽  
Vol 48 (18) ◽  
pp. 8441-8450 ◽  
Author(s):  
Alex C. K. Yip ◽  
Xijun Hu
Keyword(s):  
Catalytic Activity ◽  
Titanium Silicalite ◽  
Cyclohexanone Ammoximation

Molybdenum-Confined Hierarchical Titanium Silicalite-1: The Synthesis, Characterization, and Catalytic Activity in Alkene Oxidation

2019 ◽  
Vol 59 (3) ◽  
pp. 1093-1100 ◽  
Author(s):  
Baorong Wang ◽  
Tao Guo ◽  
Xinxin Peng ◽  
Feibiao Chen ◽  
Min Lin ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Titanium Silicalite ◽  
Alkene Oxidation

Synthesis of a Silicalite-1-coated Titanium Silicalite-1 (TS-1) Zeolite and Its Catalytic Activity in Liquid-phase Oxidation

2015 ◽  
Vol 44 (4) ◽  
pp. 477-479 ◽  
Author(s):  
Yusuke Sugiura ◽  
Yuichiro Hirota ◽  
Yoshiaki Uchida ◽  
Norikazu Nishiyama
Keyword(s):  
Catalytic Activity ◽  
Liquid Phase ◽  
Liquid Phase Oxidation ◽  
Titanium Silicalite ◽  
Phase Oxidation

scholarly journals Synthesis of Low Cost Titanium Silicalite-1 Zeolite for Highly Efficient Propylene Epoxidation

2021 ◽  
Vol 9 ◽  
Author(s):  
Meng Liu ◽  
Zihan Huang ◽  
Wei Wei ◽  
Xiangyu Wang ◽  
Yiqiang Wen
Keyword(s):  
Catalytic Activity ◽  
Hydrothermal Reaction ◽  
Low Cost ◽  
Synthesis Method ◽  
Industrial Applications ◽  
Synthesis Process ◽  
Titanium Silicalite ◽  
High Turnover ◽  
Propylene Epoxidation ◽  
Widespread Application

Developing an effective and low-cost system to synthesize titanium silicalite-1 (TS-1) zeolite is desirable for a range of industrial applications. To date, the poor catalytic activity of the synthesized zeolite due to the low amount of framework titanium and large crystal size is the main obstacle limiting the widespread application of this material. Moreover, a large amount of wastewater is often produced by the existing synthesis process. Herein, a green and sustainable route for synthesizing small-crystal TS-1 with a high fraction of framework Ti was demonstrated via a seed-assisted method using a tetrapropylammonium bromide (TPABr)-ethanolamine hydrothermal system. The influence of the synthesis conditions on the physicochemical properties and catalytic activities of TS-1 was investigated. With the assistance of nanosized S-1 seeds, the incorporation of Ti into the framework of TS-1 was promoted, and the crystallization rate was effectively accelerated. After alkaline etching, the obtained hierarchical TS-1 had higher catalytic activity towards propylene epoxidation with an extremely high turnover frequency of 1,650 h−1. Furthermore, the mother liquid during the hydrothermal reaction could be reused for the next synthesis procedure. Consequently, utilization ratios of both ethanolamine and TPABr exceeding 95% were achieved by recycling the mother liquid. This low-cost approach for reducing wastewater could be easily scaled up to provide a promising synthesis method for the industrial production of TS-1 and other topological zeolites.

scholarly journals Anionic polyelectrolytes in titanosilicate molecular sieve synthesis towards simultaneously accomplishing low production cost and high catalytic activity

RSC Advances ◽  
2018 ◽  
Vol 8 (38) ◽  
pp. 21363-21368 ◽  
Author(s):  
Kairui Fu ◽  
Jingui Wang ◽  
Yichen Wang ◽  
Yuanchao Shao ◽  
Jiaqi Zhu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Molecular Sieve ◽  
Production Cost ◽  
Low Cost ◽  
High Catalytic Activity ◽  
Titanium Silicalite ◽  
Diffusion Restriction

Anionic polyelectrolytes can help to directly achieve low-cost, titanium-rich, diffusion restriction-free and 100%-yield titanium silicalite-1.

Hollow TS-1 mesocrystals: hydrothermal construction and high catalytic performances in cyclohexanone ammoximation

RSC Advances ◽  
2015 ◽  
Vol 5 (64) ◽  
pp. 51563-51569 ◽  
Author(s):  
Yan Xue ◽  
Yiqiang Wen ◽  
Huijuan Wei ◽  
Meng Liu ◽  
Xiaoyan Huang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrothermal Treatment ◽  
Cyclohexanone Ammoximation ◽  
Catalytic Performances

Hollow TS-1 mesocrystals were obtained by the hydrothermal treatment. The hollow mesocrystalline structure significantly affects their catalytic activity in cyclohexanone ammoximation.

scholarly journals Seed-assisted synthesis of TS-1 crystals containing Al with high catalytic performances in cyclohexanone ammoximation

RSC Advances ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 2386-2394 ◽  
Author(s):  
Yan Xue ◽  
Guangling Zuo ◽  
Yiqiang Wen ◽  
Huijuan Wei ◽  
Meng Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Acid Sites ◽  
Cyclohexanone Ammoximation ◽  
Catalytic Performances

Using aluminosilicate zeolites seeds, Al atoms are introduced into the TS-1 crystals, resulting in high Lbvalue and more acid sites, which improve the catalytic activity in cyclohexanone ammoximation.

Enhanced Catalytic Activity on Post-Synthesized Hollow Titanium Silicalite-1 with High Titanium Content on the External Surface

2016 ◽  
Vol 1 (19) ◽  
pp. 6160-6166 ◽  
Author(s):  
Yi Zuo ◽  
Min Liu ◽  
Mengtong Ma ◽  
Yanli Wang ◽  
Xinwen Guo ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
External Surface ◽  
Titanium Content ◽  
Titanium Silicalite ◽  
High Titanium Content

Synthesis of mesoporous titanium silicalite-1 with high stability in cyclohexanone ammoximation

2016 ◽  
Vol 22 (3) ◽  
pp. 254-260 ◽  
Author(s):  
Yaquan Wang ◽  
Jiaxin Ye ◽  
Shuhai Wang ◽  
Yongjie Lin ◽  
Shougui Wang ◽  
...  
Keyword(s):  
High Stability ◽  
Titanium Silicalite ◽  
Cyclohexanone Ammoximation
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