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

Jianyu Li ◽  
Jiaojing Zhang ◽  
Yuanyuan Wang ◽  
Huan Wang ◽  
Hua Song
2021 ◽  
Vol 133 (3) ◽  
Prasad Sunkara ◽  
Keshavulu Masula ◽  
Veerasomaiah Puppala ◽  
Yadagiri Bhongiri ◽  
Vijay Kumar Pasala ◽  

RSC Advances ◽  
2020 ◽  
Vol 10 (66) ◽  
pp. 40450-40460
Carlos Andrés Vallejo ◽  
Luis Alejandro Galeano ◽  
Raquel Trujillano ◽  
Miguel Ángel Vicente ◽  
Antonio Gil

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.

Jiahao Li ◽  
Minyi Yu ◽  
Zheng-Chao Duan ◽  
Haiyan Zhu ◽  
Wei Yao ◽  

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...

2017 ◽  
Vol 7 (19) ◽  
pp. 4346-4350 ◽  
Linh H. T. Nguyen ◽  
The T. Nguyen ◽  
Ha L. Nguyen ◽  
Tan L. H. Doan ◽  
Phuong Hoang Tran

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

2021 ◽  
Gloria Fernandez-Lorente ◽  
Daniela Remonatto ◽  
J. Vladimir Oliveira ◽  
J. Manuel Guisan ◽  
Débora Oliveira ◽  

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.

Nanoscale ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 5145-5150 ◽  
Chongyang Tang ◽  
Nan Zhang ◽  
Qi Shao ◽  
Xiaoqing Huang ◽  
Xiangheng Xiao

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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