A cobalt-substituted Keggin-type polyoxometalate for catalysis of oxidative aromatic cracking reactions in water

2020 ◽  
Vol 10 (23) ◽  
pp. 8042-8048
Author(s):  
Yoshihiro Shimoyama ◽  
Satoru Tamura ◽  
Yasutaka Kitagawa ◽  
Dachao Hong ◽  
Yoshihiro Kon
Keyword(s):  
Sodium Bicarbonate ◽  
Catalytic System ◽  
Mild Conditions ◽  
Keggin Type

Oxidative aromatic cracking reactions in water were achieved using a catalytic system with a cobalt-substituted Keggin-type polyoxometalate as a catalyst, an Oxone® as a sacrificial oxidant and sodium bicarbonate as an additive under mild conditions.

Practical allylation with unactivated allylic alcohols under mild conditions

2021 ◽  
Author(s):  
Shuangshuang Li ◽  
Ju Qiu ◽  
Bowen Li ◽  
Zuolian Sun ◽  
Peizhong Xie ◽  
...  
Keyword(s):  
Proton Transfer ◽  
Catalytic System ◽  
Allylic Alcohols ◽  
Mild Conditions ◽  
Accelerate Proton

A practical palladium/calcium catalytic system was developed for dehydrative allylation concerning unactivated allylic alcohols. EtOH solvent with H2O additive was identified as powerful media to accelerate proton transfer. That catalytic...

Synthesis, characterization and optimization of heterogeneous catalytic cyclohexene oxidation by tungstophospho(aqua)ruthenate via the fractional factorial design methodology

2018 ◽  
Vol 42 (19) ◽  
pp. 16287-16296 ◽  
Author(s):  
Mostapha Zerrouki ◽  
Souheyla Boudjema ◽  
Abderrahim Choukchou-Braham ◽  
Ilhem Rekkab-Hammoumraoui
Keyword(s):  
Factorial Design ◽  
Design Methodology ◽  
Fractional Factorial Design ◽  
Fractional Factorial ◽  
Cyclohexene Oxidation ◽  
Heterogeneous Catalytic ◽  
Mild Conditions ◽  
Keggin Type

Keggin-type tungstophospho(aqua)ruthenate (PRuW) was synthesized and supported on acid activated montmorillonite under mild conditions.

Highly Selective Oxidation of Cinnamaldehyde to Benzaldehyde by Hydrogen Peroxide in Mild Conditions

2014 ◽  
Vol 522-524 ◽  
pp. 458-464
Author(s):  
Yuan Mei Nie ◽  
Yong Peng An ◽  
Cai Hua Peng ◽  
Xing Dong Yao
Keyword(s):  
Hydrogen Peroxide ◽  
Hydrogen Bond ◽  
Sodium Bicarbonate ◽  
Propylene Glycol ◽  
Selective Oxidation ◽  
High Selectivity ◽  
Protic Solvent ◽  
Hydrogen Bond Interaction ◽  
Mild Conditions ◽  
Effect Of Solvent

Benzaldehyde was produced from oxidation of cinnamaldehyde by hydrogen peroxide in propylene glycol in the presence of sodium bicarbonate. Protic solvent demonstrated high selectivity and the yield of benzaldehyde could reach up to 82% in propylene glycol. The effect of solvent on the selectivity was attributed to hydrogen bond interaction between the oxidation intermediate epoxide and the solvent.

A Pd-Catalyzed in situ domino process for mild and quantitative production of 2,5-dimethylfuran directly from carbohydrates

2017 ◽  
Vol 19 (9) ◽  
pp. 2101-2106 ◽  
Author(s):  
Hu Li ◽  
Wenfeng Zhao ◽  
Anders Riisager ◽  
Shunmugavel Saravanamurugan ◽  
Zhongwei Wang ◽  
...  
Keyword(s):  
Catalytic System ◽  
Mild Conditions

A sustainable catalytic system is developed to be efficient for producing the biofuel 2,5-dimethylfuran directly from carbohydrate biomass via an in situ domino process under mild conditions.

scholarly journals Pd(CH3CN)2Cl2/Pipecolinic Acid as a Highly Efficient Catalytic System for Suzuki-Miyaura Cross-coupling Reaction of Bromoaryl Carboxylic Acids in Water

Catalysts ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 86 ◽  
Author(s):  
Xiaogang Li ◽  
Wenbin Zhang ◽  
Leiqing Fu ◽  
Mengping Guo
Keyword(s):  
Catalytic System ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Catalytic Performance ◽  
High Turnover ◽  
Mild Conditions ◽  
Highly Efficient ◽  
Cross Coupling Reaction ◽  
Pipecolinic Acid ◽  
Excellent Catalytic Performance

In this study, a convenient and highly efficient catalytic system for the Suzuki-Miyaura coupling reaction was investigated under mild conditions. A combination of Pd(CH3CN)2Cl2 and pipecolinic acid showed excellent catalytic performance and afforded high turnover numbers; turnover numbers were up to 4.9 × 105 for the coupling reaction of 4-bromobenzoic acid and tetraphenylboron sodium. The catalytic system was also effective for the indexes of 4-bromobenzoic acid, and high turnover numbers were obtained.

Dawson-type polyoxometalate-based vacancies g-C3N4 composite-nanomaterials for efficient photocatalytic nitrogen fixation

2019 ◽  
Vol 6 (11) ◽  
pp. 3315-3326 ◽  
Author(s):  
Xiao-Hong Li ◽  
Wei-Lin Chen ◽  
Peng He ◽  
Ting Wang ◽  
Ding Liu ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Catalytic System ◽  
Defect Structure ◽  
Composite Nanomaterials ◽  
Self Healing ◽  
Mild Conditions ◽  
System P

POM@V-g-C3N4 show outstanding photocatalytic N2 fixation activities at mild conditions under illumination due to the excellent POM properties and rich defect structure. The reaction can form a self-healing, recyclable N2-fixing catalytic system.

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