modified cellulose
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2022 ◽  
Vol 176 ◽  
pp. 114318
Author(s):  
Anass Ait Benhamou ◽  
Abdelghani Boussetta ◽  
Zineb Kassab ◽  
Mehdi Nadifiyine ◽  
Houssine Sehaqui ◽  
...  

Catalysts ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 92
Author(s):  
Fernanda Guimarães Torres ◽  
Filipe Simões Teodoro ◽  
Leandro Vinícius Alves Gurgel ◽  
Flavien Bourdreux ◽  
Olfa Zayene ◽  
...  

This work describes the application of raw and chemically modified cellulose and sugarcane bagasse for ipso-hydroxylation of aryl boronic acids in environmentally friendly reaction conditions. The catalytic efficiency of five support-[Cu] materials was compared in forming phenols from aryl boronic acids. Our investigation highlights that the CEDA-[Cu] material (6-deoxy-6-aminoethyleneamino cellulose loaded with Cu) leads to the best results under very mild reaction conditions. The optimized catalytic sequence, allowing a facile transformation of boronic acids to phenols, required the mandatory and joint presence of the support, Cu2O, and KOH at room temperature. CEDA-[Cu] was characterized using 13C solid-state NMR, ICP, and FTIR. The use of CEDA-[Cu] accounts for the efficacious synthesis of variously substituted phenol derivatives and presents very good recyclability after five catalytic cycles.


Catalysts ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 83
Author(s):  
Cuiping Yu ◽  
Weilong Wu ◽  
Min Gao ◽  
Yu Liu

Asymmetric catalysis is the preferred method for the synthesis of pure chiral molecules in the fine chemical industry. Cellulose has long been sought as a support in enantioselective catalysis. Dialdehyde cellulose (DAC) is produced by the selective oxidation of cellulose and is used to bind 5,5′-diamino Binap by forming a Schiff base. Here, we report the synthesis of modified cellulose-supported Rh as a novel biomass-supported catalyst and the characterization of its morphology, composition, and thermal stability. DAC-BINAP-Rh was a very effective catalyst in the asymmetric hydrogenation of enamides and could be easily recycled. This work provides a novel supported catalyst that broadens the applications of cellulose in asymmetric catalysis.


Author(s):  
Ayşe Gül Yetgin ◽  
Ozan Ali Dündar ◽  
Emrah Çakmakçı ◽  
Özgür Arar

2022 ◽  
Vol 39 (1) ◽  
pp. 189-197
Author(s):  
Inamullah Douna ◽  
Sarah Farrukh ◽  
Arshad Hussain ◽  
Zarrar Salahuddin ◽  
Tayyaba Noor ◽  
...  

Desalination ◽  
2022 ◽  
Vol 521 ◽  
pp. 115385
Author(s):  
Liuqing Yang ◽  
Xudong Liu ◽  
Ximeng Zhang ◽  
Tiantian Chen ◽  
Zhibin Ye ◽  
...  

2021 ◽  
Author(s):  
Chao Tang ◽  
Rui Chen ◽  
Jinzhu Zhang ◽  
Xiao Peng ◽  
Binghao Chen ◽  
...  

Author(s):  
Qianqian Shang ◽  
Jianwen Cheng ◽  
Lihong Hu ◽  
CaiYing Bo ◽  
Xiaohui Yang ◽  
...  

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