scholarly journals Iron-doping Enhanced Basic Nickel Carbonate for Moisture Resistance and Catalytic Performance of Ozone Decomposition

2021 ◽  
pp. 127
Author(s):  
LI Bangxin ◽  
ZHANG Qian ◽  
XIAO Jie ◽  
XIAO Wenyan ◽  
ZHOU Ying
Keyword(s):  
Catalytic Performance ◽  
Moisture Resistance ◽  
Ozone Decomposition ◽  
Iron Doping ◽  
Nickel Carbonate

Improving the catalytic performance of ozone decomposition over Pd-Ce-OMS-2 catalysts under harsh conditions

2020 ◽  
Vol 10 (22) ◽  
pp. 7671-7680
Author(s):  
Li Yang ◽  
Jinzhu Ma ◽  
Xiaotong Li ◽  
Guangzhi He ◽  
Changbin Zhang ◽  
...  
Keyword(s):  
Hydrothermal Process ◽  
Catalytic Decomposition ◽  
Catalytic Performance ◽  
Ozone Decomposition ◽  
One Step ◽  
Harsh Conditions

Durable Pd-Ce-OMS-2 catalysts for ozone catalytic decomposition under harsh conditions were successfully prepared via a simple one-step hydrothermal process.

Unravelling the efficient catalytic performance of ozone decomposition over nitrogen-doped manganese oxide catalysts under high humidity

2020 ◽  
Vol 44 (41) ◽  
pp. 17993-17999 ◽  
Author(s):  
Chentao Fang ◽  
Caihong Hu ◽  
Dandan Li ◽  
Jian Chen ◽  
Mengfei Luo
Keyword(s):  
Water Vapor ◽  
Manganese Oxide ◽  
Catalytic Performance ◽  
Carbon Layer ◽  
Oxide Catalysts ◽  
Ozone Decomposition ◽  
High Humidity ◽  
Nitrogen Doped ◽  
Manganese Oxide Catalysts ◽  
Mn Species

Nitrogen-doped Mn species, coated with a carbon layer of several nanometers in thickness, for enhanced water vapor resistance.

Catalyzed ozonation process with GAC and metal doped-GAC for removing organic pollutants

2004 ◽  
Vol 49 (4) ◽  
pp. 45-49 ◽  
Author(s):  
B.S. Oh ◽  
S.J. Song ◽  
E.T. Lee ◽  
H.J. Oh ◽  
J.W. Kang
Keyword(s):  
Activated Carbon ◽  
Catalyst System ◽  
Catalytic Performance ◽  
Oh Radicals ◽  
Ozone Decomposition ◽  
Depletion Rate ◽  
Catalytic Role ◽  
Ph Conditions ◽  
Metal Doped

The purpose of this study was to investigate the catalytic role of granular activated carbon (GAC), and metal (Mn or Fe) doped-GAC, on the transformation of ozone into more reactive secondary radicals, such as hydroxyl radicals (.OH), for the treatment of wastewater. The GAC doped with Mn showed the highest catalytic performance in terms of ozone decomposition into OH radicals. Likewise, activated carbon alone accelerated the ozone decomposition, resulting in the formation of .OH radicals. In the presence of promoters, the ozone depletion rate was enhanced further by the Mn-GAC catalyst system, even under aqueous acidic pH conditions.

The design and catalytic performance of molybdenum active sites on an MCM-41 framework for the aerobic oxidation of 5-hydroxymethylfurfural to 2,5-diformylfuran

2019 ◽  
Vol 9 (3) ◽  
pp. 811-821 ◽  
Author(s):  
Zhao-Meng Wang ◽  
Li-Juan Liu ◽  
Bo Xiang ◽  
Yue Wang ◽  
Ya-Jing Lyu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Active Sites ◽  
Aerobic Oxidation ◽  
Catalytic Performance ◽  
Mcm 41

The catalytic activity decreases as –(SiO)3Mo(OH)(O) > –(SiO)2Mo(O)2 > –(O)4–MoO.

Optimizing electron density of nickel sulfide electrocatalysts through sulfur vacancy engineering for alkaline hydrogen evolution

2020 ◽  
Vol 8 (35) ◽  
pp. 18207-18214
Author(s):  
Dongbo Jia ◽  
Lili Han ◽  
Ying Li ◽  
Wenjun He ◽  
Caichi Liu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Electron Density ◽  
Rational Design ◽  
Nickel Sulfide ◽  
Catalytic Performance ◽  
Sulfide Catalysts ◽  
Sulfur Vacancy

A novel, rational design for porous S-vacancy nickel sulfide catalysts with remarkable catalytic performance for alkaline HER.

Catalytic Resonance Theory: Parallel Reaction Pathway Control

2019 ◽  
Author(s):  
M. Alexander Ardagh ◽  
Manish Shetty ◽  
Anatoliy Kuznetsov ◽  
Qi Zhang ◽  
Phillip Christopher ◽  
...  
Keyword(s):  
Chemical Reactions ◽  
Active Site ◽  
Active Sites ◽  
Reaction Pathway ◽  
Control Strategies ◽  
Oscillation Amplitude ◽  
Catalytic Performance ◽  
Parallel Reaction ◽  
Resonance Theory ◽  
Static Conditions

Catalytic enhancement of chemical reactions via heterogeneous materials occurs through stabilization of transition states at designed active sites, but dramatically greater rate acceleration on that same active site is achieved when the surface intermediates oscillate in binding energy. The applied oscillation amplitude and frequency can accelerate reactions orders of magnitude above the catalytic rates of static systems, provided the active site dynamics are tuned to the natural frequencies of the surface chemistry. In this work, differences in the characteristics of parallel reactions are exploited via selective application of active site dynamics (0 < ΔU < 1.0 eV amplitude, 10<sup>-6</sup> < f < 10<sup>4</sup> Hz frequency) to control the extent of competing reactions occurring on the shared catalytic surface. Simulation of multiple parallel reaction systems with broad range of variation in chemical parameters revealed that parallel chemistries are highly tunable in selectivity between either pure product, even when specific products are not selectively produced under static conditions. Two mechanisms leading to dynamic selectivity control were identified: (i) surface thermodynamic control of one product species under strong binding conditions, or (ii) catalytic resonance of the kinetics of one reaction over the other. These dynamic parallel pathway control strategies applied to a host of chemical conditions indicate significant potential for improving the catalytic performance of many important industrial chemical reactions beyond their existing static performance.

Fabrication and Excellent Catalytic Performance of Three-dimensional Ordered Mesoporous Molybdenum Oxides

2014 ◽  
Vol 29 (2) ◽  
pp. 124-130 ◽  
Author(s):  
Yu-Cheng DU ◽  
Guang-Wei ZHENG ◽  
Qi MENG ◽  
Li-Ping WANG ◽  
Hai-Guang FAN ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Catalytic Performance ◽  
Molybdenum Oxides ◽  
Ordered Mesoporous ◽  
Excellent Catalytic Performance
Sign in / Sign up

Export Citation Format

Share Document