scholarly journals Iron Modified Natural Zeolite as Sustainable Environmental Catalysts: Correlation between Iron Speciation and Catalytic Activity in NO-Reduction

2020 ◽  
Author(s):  
Fernando Chávez Rivas ◽  
Inocente Rodríguez-Iznaga ◽  
Gloria Berlier ◽  
Daria Tito Ferro ◽  
Beatriz Concepción-Rosabal ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Natural Zeolite ◽  
No Reduction ◽  
Iron Speciation ◽  
Environmental Catalysts

Strategies of alloying effect for regulating Pt-based H2-SCR catalytic activity

2018 ◽  
Vol 54 (68) ◽  
pp. 9502-9505 ◽  
Author(s):  
Wei Sun ◽  
Zhiqiang Wang ◽  
Qian Wang ◽  
Waqas Qamar Zaman ◽  
Limei Cao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Transition Metals ◽  
No Reduction ◽  
Compressive Strain ◽  
Reduction Reaction ◽  
Alloying Effect

Compressive strain is induced in Pt crystals by alloying with smaller-sized 3d transition metals, which enhances the H2–NO reduction reaction activity by decreasing the energy required for breaking the N–O bond.

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.

A heterogeneous single Cu catalyst of Cu atoms confined in the spinel lattice of MgAl2O4 with good catalytic activity and stability for NO reduction by CO

2019 ◽  
Vol 7 (12) ◽  
pp. 7202-7212 ◽  
Author(s):  
Jichun Wu ◽  
Yuanzhi Li ◽  
Yi Yang ◽  
Qian Zhang ◽  
Li Yun ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Temperature ◽  
No Reduction ◽  
Confinement Effect ◽  
No Reduction By Co ◽  
Spinel Lattice ◽  
Cu Catalyst ◽  
Good Catalytic Activity

A heterogeneous single Cu catalyst exhibits good catalytic activity and durability at high temperature for NO reduction by CO due to the confinement effect of spinel lattice.

scholarly journals Insights into the promotion role of phosphorus doping on carbon as a metal-free catalyst for low-temperature selective catalytic reduction of NO with NH3

RSC Advances ◽  
2020 ◽  
Vol 10 (22) ◽  
pp. 12908-12919
Author(s):  
Weifeng Li ◽  
Shuangling Jin ◽  
Rui Zhang ◽  
Yabin Wei ◽  
Jiangcan Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
No Reduction ◽  
Catalytic Reduction ◽  
Carbon Aerogels ◽  
Phosphorus Doping ◽  
Reduction Of No ◽  
Metal Free

P species can effectively enhance the catalytic activity of carbon aerogels for NO reduction at low temperature.

NO reduction utilizing complex oxide catalysts

RSC Advances ◽  
2016 ◽  
Vol 6 (88) ◽  
pp. 85434-85439 ◽  
Author(s):  
Kimber L. Stamm Masias ◽  
Torin C. Peck ◽  
Paul T. Fanson
Keyword(s):  
Catalytic Activity ◽  
Precious Metal ◽  
No Reduction ◽  
Precious Metals ◽  
Complex Oxide ◽  
Oxide Catalysts ◽  
Order Of Magnitude ◽  
Metal Doped

Precious metal doped BaCeO3 compounds show catalytic activity toward NO an order of magnitude higher than traditional supported precious metals.

Core of the Structural Characteristic of Natural Zeolite and its Catalytic Activity in the Aromatization of Light-Molecular Paraffin

2014 ◽  
Vol 618 ◽  
pp. 90-93
Author(s):  
Vasilina Gulzira ◽  
Moisa Raisa ◽  
Kayrbekov Zhaksyntay ◽  
Yermoldina Elmira
Keyword(s):  
Catalytic Activity ◽  
Specific Surface ◽  
Porous Structure ◽  
Structural Characteristic ◽  
Natural Zeolite

The porous structure of Semeytau natural zeolite field, catalysts on its basis, and their catalytic activity in the course of aromatization of n-octane has been investigated. Higher activity of Ni, the Zn sample containing catalyst is defined by formation by more developed specific surface and porous structure.

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