Effect of Alkali Metal Addition to a Ru/CeO2 Catalyst Prepared by NaBH4 Reduction on the Catalytic Performance for H2 Production via NH3 Decomposition

2021 ◽  
Vol 54 (3) ◽  
pp. 77-86
Author(s):  
Takeshi Furusawa ◽  
Keita Sugiyama ◽  
Hiroki Kuribara ◽  
Masahide Sato ◽  
Noboru Suzuki ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Catalytic Performance ◽  
Metal Addition

A low-deactivation-rate Lewis acid zeolite prepared in an alkali metal ion-containing system for alkene epoxidation

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 98514-98519 ◽  
Author(s):  
Kai-Rui Fu ◽  
Ji-Kang Yao ◽  
Qiang Xiao ◽  
Hai-Xia Liu ◽  
Tian-Duo Li ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Lewis Acid ◽  
Metal Ion ◽  
Catalytic Performance ◽  
Alkali Metal Ion ◽  
Deactivation Rate ◽  
Acid Zeolites

The best catalytic performance among the currently reported TS-1 Lewis acid zeolites is achieved due to its durable catalytic life.

scholarly journals Non-Solvent Synthesis of a Robust Potassium-Doped PdCu-Pd-Cu@C Nanocatalyst for High Selectively Tandem Reactions

Catalysts ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1191
Author(s):  
Sanha Jang ◽  
Dicky Annas ◽  
Sehwan Song ◽  
Jong-Seong Bae ◽  
Sungkyun Park ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Alkali Metal ◽  
Gas Flow ◽  
High Surface ◽  
High Surface Area ◽  
Weight Ratio ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Mechanical Grinding ◽  
Metal Doped

A non-solvent synthesis of alkali metal-doped PdCu-Pd-Cu@C is presented that needs no mechanical grinding and utilizes heat treatment under an N2 gas flow. Pluronic® F127 is used to generate pores and a high surface area, and tannic acid is used as a carbon source for the PdCu-Pd-Cu@C nanocatalysts. Because some C is transferred to organic compounds during the nitrogen heat treatment, this demonstrated the advantage of raising the weight ratio of active metals comparatively. The PdCu-Pd-Cu@C nanocatalyst developed in this study outperformed commercial Pd/C catalysts by bimetallic PdCu-Pd-Cu nanoparticles and Pd nanoparticles in terms of catalytic activity (selectivity of commercial Pd/C: 45%; PdCu-Pd-Cu@C nanocatalyst: 76%). The alkali metal dopants increase the selectivity of the final product on the PdCu-Pd-Cu@C surface because they are electron-rich, which assists in the adsorption of the substrate (selectivity of PdCu-Pd-Cu@C nanocatalyst: 76%; K-doped PdCu-Pd-Cu@C nanocatalysts: 90%). Furthermore, even after being reused 5 times in this research, the final catalytic performance was comparable to that of the initial catalyst.

Effect of alkali metal ion modification on the catalytic performance of nano-HZSM-5 zeolite in butene cracking

2011 ◽  
Vol 39 (6) ◽  
pp. 449-454 ◽  
Author(s):  
Rui-fang XU ◽  
Jia-xu LIU ◽  
Cui-cui LIANG ◽  
Wen-hao JIA ◽  
Fu-fen LI ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Metal Ion ◽  
Catalytic Performance ◽  
Alkali Metal Ion

Effect of alkali metal addition on the activity of WO3 in propene metathesis

1991 ◽  
Vol 65 (1-2) ◽  
pp. 181-185 ◽  
Author(s):  
Sheena Stevenson ◽  
Paul A. Sermon
Keyword(s):  
Alkali Metal ◽  
Metal Addition

Inorganic Electrides Formed by Alkali Metal Addition to Pure Silica Zeolites.

ChemInform ◽  
2003 ◽  
Vol 34 (26) ◽  
Author(s):  
Daryl P. Wernette ◽  
Andrew S. Ichimura ◽  
Stephanie A. Urbin ◽  
James L. Dye
Keyword(s):  
Alkali Metal ◽  
Pure Silica ◽  
Metal Addition
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