scholarly journals Photocatalytic Ullmann coupling of aryl halides by a novel blended catalyst consisting of a TiO2 photocatalyst and an Al2O3 supported Pd–Au bimetallic catalyst

2018 ◽  
Vol 8 (23) ◽  
pp. 6196-6203 ◽  
Author(s):  
Akanksha Tyagi ◽  
Akira Yamamoto ◽  
Hisao Yoshida

Synergy of TiO2 photocatalyst and Pd–Au bimetallic nanoparticles is essential for the efficient photocatalytic Ullmann coupling of aryl halides.

2009 ◽  
Vol 11 (3) ◽  
pp. 22-26 ◽  
Author(s):  
Qijie Xu ◽  
Lei Zhang ◽  
Wenzhong Shi ◽  
Yuanchen Cui

Catalytic performances of cross-linking humic acids supported Pd/Ni bimetallic catalyst for heck reaction The cross-linking humic acids (CL-HAs), epichlorohydrin as the cross-linking reagent and the supported Pd/Ni bimetallic catalysts (CL-HAs-Pd/Ni) were prepared and characterized by IR, AAS, XPS, TEM. The effects of reaction time, temperature, base, solvent and the amount of catalyst on the properties of the catalyst were studied. These catalysts could catalyze the Heck reaction of aryl halides and substituted aryl halides with acrylic acids or styrene successfully; the yields were all above 95%.


RSC Advances ◽  
2018 ◽  
Vol 8 (42) ◽  
pp. 24021-24028 ◽  
Author(s):  
Akanksha Tyagi ◽  
Akira Yamamoto ◽  
Hisao Yoshida

A TiO2 photocatalyst physically mixed with a supported Pd–Au bimetallic catalyst is more efficient than Pd loaded TiO2 sample for the photocatalytic DCC between arene and THF.


2021 ◽  
Author(s):  
Seyyedeh Ameneh Alavi G. ◽  
Mohammad Ali Nasseri ◽  
Milad Kazemnejadi ◽  
Ali Allahresani ◽  
Mahdi HussainZadeh

The novel heterogeneous bimetallic nanoparticles of Cu–Co were synthesized and successfully applied as a recyclable magnetically catalyst in Heck, Suzuki, and C–N cross-coupling via a quick, easy, efficacious and environmentally protocol.


2014 ◽  
Vol 44 (17) ◽  
pp. 2468-2477 ◽  
Author(s):  
Li Yang ◽  
Qichao Yang ◽  
Jianxin Shi ◽  
Yufang Wang ◽  
Mingjie Zhang

2018 ◽  
Vol 42 (8) ◽  
pp. 419-423
Author(s):  
Li-Jie Zhang ◽  
Xian Yao ◽  
Ying-xin Sun ◽  
Jia-wei Zhang ◽  
Chun Cai

Pd–Ni bimetallic nanoparticles (BMNPs) supported on ZrO2 were prepared by an impregnation–reduction method. The BMNPs showed excellent catalytic performance in Suzuki carbon–carbon cross-coupling reactions and almost quantitative conversion of the substrates was obtained under mild conditions in the absence of ligand. The excellent catalytic performance of the bimetallic catalyst could be a result of the synergistic effect between the two metal components. The catalyst showed outstanding recyclability during the reaction process; no obvious decrease in catalytic performance was observed after five cycles.


2020 ◽  
Vol 41 (2) ◽  
pp. 357-363 ◽  
Author(s):  
Zhi-Feng Jiao ◽  
Ji-Xiao Zhao ◽  
Xiao-Ning Guo ◽  
Xiang-Yun Guo

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