Improved high-temperature hydrothermal stability of Cu-SSZ-13 by an ammonium hexafluorosilicate treatment

RSC Advances ◽  
2015 ◽  
Vol 5 (83) ◽  
pp. 67841-67848 ◽  
Author(s):  
Yu Zhang ◽  
Hongning Wang ◽  
Ruoyu Chen
Keyword(s):  
High Temperature ◽  
Hydrothermal Stability ◽  
Ammonium Hexafluorosilicate

Cu-SSZ-13 catalysts were treated with ammonium hexafluorosilicate (AHFS) to improve their hydrothermal stabilities.

Grain size effect on the high-temperature hydrothermal stability of Cu/SAPO-34 catalysts for NH3-SCR

2020 ◽  
Vol 8 (6) ◽  
pp. 104559
Author(s):  
Haidi Xu ◽  
Chenlu Lin ◽  
Qingjin Lin ◽  
Xi Feng ◽  
Zhifeng Zhang ◽  
...  
Keyword(s):  
Grain Size ◽  
High Temperature ◽  
Size Effect ◽  
Hydrothermal Stability ◽  
Grain Size Effect ◽  
Nh3 Scr

Comprehensive effect of tuning Cu/SAPO-34 crystals using PEG on the enhanced hydrothermal stability for NH3-SCR

2021 ◽  
Author(s):  
Qingjin Lin ◽  
Shuang Liu ◽  
Shuhao Xu ◽  
Shi Xu ◽  
Mingming Pei ◽  
...  
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Hydrothermal Stability ◽  
Hierarchical Zeolite ◽  
Nh3 Scr ◽  
Zeolite Crystals

PEG fabricates advantageous hierarchical zeolite crystals, enhancing the high-temperature and low-temperature hydrothermal stability of Cu/SAPO-34.

Enhancing catalytic performance of Cu-SSZ-13 for NH3-SCR reaction via in situ introduction of Fe3+ with diatomite

2021 ◽  
Author(s):  
Mengyang Chen ◽  
Yingzhen Wei ◽  
Jinfeng Han ◽  
Wenfu Yan ◽  
Jihong Yu
Keyword(s):  
High Temperature ◽  
Catalytic Performance ◽  
Hydrothermal Stability ◽  
Highly Efficient ◽  
Nh3 Scr ◽  
Cu Catalyst

The SSZ-13 zeolite supported Cu catalyst is highly efficient in eliminating the NOx and introduction of Fe3+ ions can significantly improve the high-temperature activity and the hydrothermal stability of Cu-SSZ-13....

Hydrothermal stability of Pd/ZrO2 catalysts for high temperature methane combustion

2014 ◽  
Vol 160-161 ◽  
pp. 135-143 ◽  
Author(s):  
Jung-Hyun Park ◽  
Jun Hee Cho ◽  
Yun Jung Kim ◽  
Eun Seok Kim ◽  
Hyun Sik Han ◽  
...  
Keyword(s):  
High Temperature ◽  
Methane Combustion ◽  
Hydrothermal Stability

Influence of Thermo-Mechanical Processing on the Microstructure of Beryllia Dispersed Nickel Alloys

1973 ◽  
Vol 31 ◽  
pp. 184-185
Author(s):  
M.S. Grewal ◽  
S.A. Sastri ◽  
N.J. Grant
Keyword(s):  
High Temperature ◽  
Nickel Alloys ◽  
Thermomechanical Processing ◽  
Cold Work ◽  
High Temperature Strength ◽  
Strengthening Effect ◽  
Mechanical Processing ◽  
Uniform Dispersion ◽  
Oxide Particles ◽  
Nickel Base

Currently there is a great interest in developing nickel base alloys with fine and uniform dispersion of stable oxide particles, for high temperature applications. It is well known that the high temperature strength and stability of an oxide dispersed alloy can be greatly improved by appropriate thermomechanical processing, but the mechanism of this strengthening effect is not well understood. This investigation was undertaken to study the dislocation substructures formed in beryllia dispersed nickel alloys as a function of cold work both with and without intermediate anneals. Two alloys, one Ni-lv/oBeo and other Ni-4.5Mo-30Co-2v/oBeo were investigated. The influence of the substructures produced by Thermo-Mechanical Processing (TMP) on the high temperature creep properties of these alloys was also evaluated.

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