Activity function describing the effect of Pd loading on the catalytic performance of modern commercial TWC

2012 ◽  
Vol 207-208 ◽  
pp. 117-121 ◽  
Author(s):  
Sung Bong Kang ◽  
Seok Jun Han ◽  
Sung Bang Nam ◽  
In-Sik Nam ◽  
Byong K. Cho ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Effect Of Pd

Effect of Pd or Ir on the catalytic performance of Mo/H-ZSM-5 during the non-oxidative conversion of natural gas to petrochemicals

2008 ◽  
Vol 17 (4) ◽  
pp. 337-343 ◽  
Author(s):  
Ahmed K. Aboul-Gheit ◽  
Ahmed E. Awadallah ◽  
Salah M. El-Kossy ◽  
Abdel-Lateef H. Mahmoud
Keyword(s):  
Natural Gas ◽  
Catalytic Performance ◽  
Oxidative Conversion ◽  
Effect Of Pd

Catalytic performance of Pd-promoted Cu hydrotalcite-derived catalysts in partial hydrogenation of acetylene: effect of Pd–Cu alloy formation

2016 ◽  
Vol 6 (9) ◽  
pp. 3027-3037 ◽  
Author(s):  
Yanan Liu ◽  
Yufei He ◽  
Daran Zhou ◽  
Junting Feng ◽  
Dianqing Li
Keyword(s):  
Catalytic Performance ◽  
Partial Hydrogenation ◽  
Alloy Formation ◽  
Cu Alloy ◽  
Highly Dispersed ◽  
Effect Of Pd

A highly dispersed PdCu nanoalloy catalyst derived from a CuMgAl-hydrotalcite precursor exhibited superior catalytic performance in partial hydrogenation of acetylene.

Promoting effects of MgO and Pd modification on the catalytic performance of hierarchical porous ZSM-5 for catalyzing benzene alkylation with methanol

RSC Advances ◽  
2015 ◽  
Vol 5 (77) ◽  
pp. 63044-63049 ◽  
Author(s):  
Hualei Hu ◽  
Jinghui Lyu ◽  
Jie Cen ◽  
Qunfeng Zhang ◽  
Qingtao Wang ◽  
...  
Keyword(s):  
Side Reaction ◽  
Catalytic Performance ◽  
Benzene Alkylation ◽  
Hierarchical Porous ◽  
Effect Of Pd

The dual modification catalyst (MgO and Pd) could effectively combine the effect of MgO for suppressing the side reaction of methanol to olefins and the effect of Pd for inhibiting the formation of ethylbenzene and coke.

Promoter effect of Pd species on Mn oxide catalysts supported on rare-earth-iron mixed oxide

2016 ◽  
Vol 6 (21) ◽  
pp. 7868-7874 ◽  
Author(s):  
Saburo Hosokawa ◽  
Ryohei Tada ◽  
Takuya Shibano ◽  
Shogo Matsumoto ◽  
Kentaro Teramura ◽  
...  
Keyword(s):  
Rare Earth ◽  
Mixed Oxide ◽  
Catalytic Performance ◽  
Hexagonal Structure ◽  
Oxide Catalysts ◽  
Promoter Effect ◽  
Mn Oxide ◽  
Effect Of Pd

The loading of a small amount of Pd species dramatically promotes a catalytic performance of MnOx species located on the hexagonal structure of YbFeO3.

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.

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