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 pure and uniform nano-sized TS-1 crystal with high titanium content and high space-time yield

2021 ◽  
Author(s):  
Lejian Zhang ◽  
Xiaoxiao Zhu ◽  
Xinping Wang ◽  
Chuan Shi
Keyword(s):  
Selective Oxidation ◽  
Cost Efficiency ◽  
Environmental Issues ◽  
Titanium Content ◽  
Space Time ◽  
Titanium Silicalite ◽  
Oxidation Reactions ◽  
High Space ◽  
Space Time Yield ◽  
Selective Oxidation Reactions

Anatase-free titanium silicalite-1 (TS-1) zeolite with high framework titanium content is highly required for catalysing selective oxidation reactions, while its synthesis generally suffers from cost, efficiency and environmental issues. Herein,...

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

Inactivation of External Surface of ZSM-5: Zeolite Morphology, Crystal Size, and Catalytic Activity

1996 ◽  
Vol 159 (2) ◽  
pp. 368-374 ◽  
Author(s):  
Y.S. Bhat ◽  
J. Das ◽  
K.V. Rao ◽  
A.B. Halgeri
Keyword(s):  
Catalytic Activity ◽  
Crystal Size ◽  
External Surface

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.

Study of Comprehensive Utilization on Ti-Bearing Blast Furnace Slag

2014 ◽  
Vol 488-489 ◽  
pp. 141-144 ◽  
Author(s):  
Qian Qian Ren ◽  
Su Ju Hao ◽  
Wu Feng Jiang ◽  
Yu Zhu Zhang ◽  
Wei Pan Zhang
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Titanium Content ◽  
Application Field ◽  
Comprehensive Utilization ◽  
Furnace Slag ◽  
Application Prospects ◽  
High Titanium Content

With the increase of Ti-bearing blast furnace slag, its harm is growing. It contains high titanium content. How to make good use of Ti-bearing blast furnace slag is currently a hot problem. In this paper, the conditions of comprehensive utilization on Ti-bearing blast furnace slag were described firstly. Then the features, application field and problems of extraction and non-extraction titanium from Ti-bearing blast furnace slag were introduced. The advantages, disadvantages and problems of comprehensive utilization of Ti-bearing blast furnace slag were analyzed. Finally the application prospects were forecasted.

Dynamic recrystallisation and modelling of microstructural evolution of high-titanium-content 6061 aluminium alloy

2020 ◽  
Vol 111 (4) ◽  
pp. 316-324
Author(s):  
Wei Chen ◽  
Yanfei Gu ◽  
Yingping Guan ◽  
Chunfa Dong
Keyword(s):  
Aluminium Alloy ◽  
Titanium Content ◽  
Hot Compression ◽  
Strain Rates ◽  
Compression Tests ◽  
Constitutive Analysis ◽  
Physically Based ◽  
Dynamic Recrystallisation ◽  
6061 Aluminium Alloy ◽  
High Titanium Content

Abstract The dynamic recrystallisation behaviour of high-titaniumcontent 6061 aluminium alloy was investigated by hot compression tests within the temperature range of 623- 783 K and at strain rates of 0.01 -10 s-1. The characteristics of the true stress-strain curves acquired in the hot compression tests were investigated, and it was observed that the dynamic recrystallisation of high-titanium-content 6061 aluminium alloy occurs within the range of deformation temperatures of 623 -783 K, with strain rates of 0.001 - 0.1 s-1as evinced by a physically-based constitutive analysis. The kinetic model of dynamic recrystallisation was deduced to describe the dynamic recrystallisation behaviour of high-titanium-content 6061 aluminium alloy, and the dynamic recrystallisation grain size model was also constructed.

Sign in / Sign up

Export Citation Format

Share Document