Preparation of highly active g-C3N4 supported amphiphilic quaternary ammonium phosphotungstate catalyst for solvent-free oxidative desulfurization of benzothiophene

2022 ◽  
Author(s):  
Jianyu Li ◽  
Jiaojing Zhang ◽  
Yuanyuan Wang ◽  
Huan Wang ◽  
Hua Song
Keyword(s):  
Quaternary Ammonium ◽  
Oxidative Desulfurization ◽  
Solvent Free ◽  
Highly Active

Highly active zinc oxide-supported lithium oxide catalyst for solvent-free Knoevenagel condensation

2021 ◽  
Vol 133 (3) ◽  
Author(s):  
Prasad Sunkara ◽  
Keshavulu Masula ◽  
Veerasomaiah Puppala ◽  
Yadagiri Bhongiri ◽  
Vijay Kumar Pasala ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Oxide Catalyst ◽  
Knoevenagel Condensation ◽  
Solvent Free ◽  
Lithium Oxide ◽  
Highly Active

scholarly journals Preparation of Al/Fe-PILC clay catalysts from concentrated precursors: enhanced hydrolysis of pillaring metals and intercalation

RSC Advances ◽  
2020 ◽  
Vol 10 (66) ◽  
pp. 40450-40460
Author(s):  
Carlos Andrés Vallejo ◽  
Luis Alejandro Galeano ◽  
Raquel Trujillano ◽  
Miguel Ángel Vicente ◽  
Antonio Gil
Keyword(s):  
Solvent Free ◽  
Peroxide Oxidation ◽  
Highly Active ◽  
Wet Peroxide Oxidation ◽  
Catalytic Wet Peroxide Oxidation ◽  
Hydrolysis Of ◽  
Clay Catalysts

Significantly intensified preparation of Al/Fe-hydrolysed-pillaring solutions and solvent-free intercalation of bentonites yielding Al/Fe-PILCs highly active in catalytic wet peroxide oxidation.

Porous cross-linked polymer copper and iridium catalyzed the synthesis of quinoxalines and functionalized ketones under solvent-free conditions

2021 ◽  
Author(s):  
Jiahao Li ◽  
Minyi Yu ◽  
Zheng-Chao Duan ◽  
Haiyan Zhu ◽  
Wei Yao ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Solvent Free ◽  
Highly Active ◽  
Solvent Free Conditions ◽  
Catalytic Applications

The development of highly active and efficient ligands is recognized to be crucial for catalytic applications of coordination polymers under specific conditions, such as solvent-free or in water. A new...

A new superacid hafnium-based metal–organic framework as a highly active heterogeneous catalyst for the synthesis of benzoxazoles under solvent-free conditions

2017 ◽  
Vol 7 (19) ◽  
pp. 4346-4350 ◽  
Author(s):  
Linh H. T. Nguyen ◽  
The T. Nguyen ◽  
Ha L. Nguyen ◽  
Tan L. H. Doan ◽  
Phuong Hoang Tran
Keyword(s):  
Heterogeneous Catalyst ◽  
Metal Organic Framework ◽  
Solvent Free ◽  
Highly Active ◽  
Solvent Free Conditions ◽  
Metal Organic ◽  
Efficient Heterogeneous Catalyst ◽  
Organic Framework

A new superacid Hf-based MOF, termed VNU-11-P-SO4, was used as an efficient heterogeneous catalyst for solvent-free 2-arylbenzoxazole synthesis.

Immobilization of Eversa Lipases on Hydrophobic Supports for Production of Oleate Esters Solvent-Free

2021 ◽  
Author(s):  
Gloria Fernandez-Lorente ◽  
Daniela Remonatto ◽  
J. Vladimir Oliveira ◽  
J. Manuel Guisan ◽  
Débora Oliveira ◽  
...  
Keyword(s):  
Sunflower Oil ◽  
Low Cost ◽  
Industrial Applications ◽  
Solvent Free ◽  
Molar Ratio ◽  
High Catalytic Activity ◽  
Promising Alternative ◽  
Highly Active ◽  
Immobilized Biocatalyst ◽  
Hydrophobic Supports

Abstract Lipases are an important group of biocatalysts for many industrial applications. Two new commercial low-cost lipases Eversa® Transform and Eversa® Transform 2.0 was immobilized on four different hydrophobic supports: Lewatit-DVB, Purolite-DVB, Sepabeads-C18, and Purolite-C18. The performance of immobilized lipases was investigated in the transesterification of sunflower oil solvent-free in an anhydrous medium. Interesting results were obtained for both lipases and the four supports, but with Sepabeads support the lipases Eversa showed high catalytic activity. However, the more stable and efficient derivative was Eversa® Transform immobilized on Sepabeads C-18. A 98 wt% of ethyl ester of fatty acid (FAEE) was obtained, in 3 hours at 40ºC, ethanol/sunflower oil molar ratio of 3:1 and a 10 wt% of the immobilized biocatalyst. After 6 reaction cycles, the immobilized biocatalyst preserved 70 wt% of activity. Both lipases immobilized in Sepabeads C-18 were highly active and stable in the presence of ethanol. The immobilization of Eversa Transform and Eversa Transform 2.0 in hydrophobic supports described in this study appears to be a promising alternative to the immobilization and application of these news lipases still unexplored.

Rational design of ordered Pd–Pb nanocubes as highly active, selective and durable catalysts for solvent-free benzyl alcohol oxidation

Nanoscale ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 5145-5150 ◽  
Author(s):  
Chongyang Tang ◽  
Nan Zhang ◽  
Qi Shao ◽  
Xiaoqing Huang ◽  
Xiangheng Xiao
Keyword(s):  
Benzyl Alcohol ◽  
Rational Design ◽  
Alcohol Oxidation ◽  
Solvent Free ◽  
Benzyl Alcohol Oxidation ◽  
Highly Active ◽  
Better Than

Ordered Pd–Pb nanocubes (NCs) were adopted as efficient heterocatalysts for the selective benzyl alcohol oxidation. Due to the ordered phase and well-defined surface, the Pd–Pb NCs can achieve superior activity and selectivity, better than those of other catalysts as we prepared.

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