Development of highly active coated monolith SCR catalyst with strong abrasion resistance for low-temperature application

2015 ◽  
Vol 9 (6) ◽  
pp. 979-987 ◽  
Author(s):  
Lina Gan ◽  
Shan Lei ◽  
Jian Yu ◽  
Hongtao Ma ◽  
Yo Yamamoto ◽  
...  
Keyword(s):  
Low Temperature ◽  
Abrasion Resistance ◽  
Scr Catalyst ◽  
Highly Active ◽  
Temperature Application

A Novel MnOx Supported Palygorskite SCR Catalyst for Lower Temperature NO Removal from Flue Gases

2011 ◽  
Vol 356-360 ◽  
pp. 974-979 ◽  
Author(s):  
Xian Long Zhang ◽  
Bo Wen Shi ◽  
Xue Ping Wu ◽  
Wei Ping Jiang ◽  
Bao Jun Yang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Manganese Oxide ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Flue Gases ◽  
Scr Catalyst ◽  
No Removal ◽  
Highly Active ◽  
Lower Temperature ◽  
Scr Of Nox

Palygorskite supported manganese oxide catalysts (MnOx/PG) were prepared for lower temperature selective catalytic reduction (SCR) of NOx by NH3. Catalyst’s SCR activity was estimated at varied temperatures. Catalyst’s properties were characterized by XRD, NH3adsorption and TPD. Results showed that MnOx/PG catalyst was highly active for SCR at low-temperature. It was also found that NH3 was mainly adsorbed on palygorskite in two forms. Weakly adsorbed NH3, which was seldom inhibited by loading of MnOx, but was more favorable to SCR. Whereas strongly adsorbed NH3was more likely to be inhibited by MnOx loading but was inessential for SCR.

Pt-Pd Nanoalloy for the Unprecedented Activation of Carbon-Fluorine Bond at Low Temperature

2019 ◽  
Author(s):  
Raghu Nath Dhital ◽  
keigo nomura ◽  
Yoshinori Sato ◽  
Setsiri Haesuwannakij ◽  
Masahiro Ehara ◽  
...  
Keyword(s):  
Activation Energy ◽  
Low Temperature ◽  
Dft Calculations ◽  
Bond Activation ◽  
Mild Conditions ◽  
Selective Transformation ◽  
Rate Determining Step ◽  
Highly Active ◽  
Harsh Conditions ◽  
Reaction Profile

Carbon-Fluorine (C-F) bonds are considered the most inert organic functionality and their selective transformation under mild conditions remains challenging. Herein, we report a highly active Pt-Pd nanoalloy as a robust catalyst for the transformation of C-F bonds into C-H bonds at low temperature, a reaction that often required harsh conditions. The alloying of Pt with Pd is crucial to activate C-F bond. The reaction profile kinetics revealed that the major source of hydrogen in the defluorinated product is the alcoholic proton of 2-propanol, and the rate-determining step is the reduction of the metal upon transfer of the <i>beta</i>-H from 2-propanol. DFT calculations elucidated that the key step is the selective oxidative addition of the O-H bond of 2-propanol to a Pd center prior to C-F bond activation at a Pt site, which crucially reduces the activation energy of the C-F bond. Therefore, both Pt and Pd work independently but synergistically to promote the overall reaction

Highly active PdCeOx composite catalysts for low-temperature CO oxidation, prepared by plasma-arc synthesis

2014 ◽  
Vol 147 ◽  
pp. 132-143 ◽  
Author(s):  
R.V. Gulyaev ◽  
E.M. Slavinskaya ◽  
S.A. Novopashin ◽  
D.V. Smovzh ◽  
A.V. Zaikovskii ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Plasma Arc ◽  
Composite Catalysts ◽  
Highly Active ◽  
Low Temperature Co Oxidation

Low-temperature Shift DeNOx Activity of Nanoflake V2O5 loaded WO3/TiO2 as NH3-SCR Catalyst

2022 ◽  
pp. 109191
Author(s):  
Jae Gu Heo ◽  
Mahboob Ullah ◽  
Myoung-Pyo Chun ◽  
Yong Sik Chu ◽  
Seong Gwan Seo ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Shift ◽  
Scr Catalyst ◽  
Nh3 Scr

An Efficient Two-Step Method for NH3 Removal at Low Temperature Using CoOx-CuOx/TiO2 as SCO Catalyst Followed by NiMn2O4 as SCR Catalyst

2017 ◽  
Vol 31 (8) ◽  
pp. 8580-8593 ◽  
Author(s):  
Xiaolong Tang ◽  
Jingying Li ◽  
Honghong Yi ◽  
Qingjun Yu ◽  
Fengyu Gao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Step Method ◽  
Scr Catalyst

Epoxies for Low Temperature Application Impregnating Technology

1984 ◽  
pp. 51-60 ◽  
Author(s):  
Heinz Hacker ◽  
Cord Albrecht ◽  
Heinz Laupenmühlen ◽  
Herbert Salzburger ◽  
Walter Ihlein
Keyword(s):  
Low Temperature ◽  
Temperature Application

scholarly journals On the Properties of Steels for Low Temperature Application (Si-Mn Y N D Steel)

1962 ◽  
Vol 31 (2) ◽  
pp. 136-142
Author(s):  
Tadashi Ohtake ◽  
Sadayoshi Morita ◽  
Susumu Goda ◽  
Masao Kanamori ◽  
Toshimasa Okabe ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Application

scholarly journals Electrical Promotion-Assisted Automotive Exhaust Catalyst: Highly Active and Selective NO Reduction to N2 at Low-Temperatures

2021 ◽  
Author(s):  
Yuki Omori ◽  
Ayaka Shigemoto ◽  
Kohei Sugihara ◽  
Takuma Higo ◽  
Toru Uenishi ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Electric Field ◽  
Low Temperatures ◽  
No Reduction ◽  
Lattice Oxygen ◽  
Pd Catalyst ◽  
Highly Active ◽  
Automotive Exhaust Catalyst ◽  
Activated Surface

Pd catalyst (Pd/Ce<sub>0.7</sub>Zr<sub>0.3</sub>O<sub>2</sub>) in an electric field exhibits extremely high three-way catalytic activity (TWC: NO-C<sub>3</sub>H<sub>6</sub>-CO-O<sub>2</sub>-H<sub>2</sub>O). By applying an electric field to the semiconductor catalyst, low-temperature operation of TWC can be achieved even at 473 K by virtue of the activated surface-lattice oxygen.

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