scholarly journals Catalytic Activity of Intercalated Montmorillonite Clay for Glycerol Conversion to Oligomers via Microwave Irradiation

2020 ◽  
Vol 99 (1) ◽  
pp. 16-19
Author(s):  
Muhammad SAJID ◽  
Muhammad AYOUB ◽  
Yoshimitsu UEMURA ◽  
Suzana YUSUP ◽  
Bawadi B ABDULLAH ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Microwave Irradiation ◽  
Montmorillonite Clay ◽  
Glycerol Conversion

Preparation and catalytic activity of Ni/CNTs nanocomposites using microwave irradiation heating method

2008 ◽  
Vol 62 (15) ◽  
pp. 2343-2346 ◽  
Author(s):  
XiaoJuan Zhang ◽  
Wei Jiang ◽  
Dan Song ◽  
JianXun Liu ◽  
FengSheng Li
Keyword(s):  
Catalytic Activity ◽  
Microwave Irradiation ◽  
Heating Method

scholarly journals Unlocking the catalytic potential of tris(3,4,5-trifluorophenyl)borane with microwave irradiation

2019 ◽  
Vol 55 (3) ◽  
pp. 318-321 ◽  
Author(s):  
Jamie L. Carden ◽  
Lukas J. Gierlichs ◽  
Duncan F. Wass ◽  
Duncan L. Browne ◽  
Rebecca L. Melen
Keyword(s):  
Catalytic Activity ◽  
Microwave Irradiation ◽  
Catalytic Potential

The catalytic activity of tris(3,4,5-trifluorophenyl)borane has been explored in the 1,2-hydroboration reactions of unsaturated substrates.

Synthesis of Isopulegol Through Cyclisation of Citronellal Using Solid Acid Catalysts: Catalytic Reaction Performance Evaluation and Process Parameters Optimization

2021 ◽  
Vol 22 (2) ◽  
pp. 252-263
Author(s):  
Abdul Karim Shah ◽  
Ghulam Abbas Kandhro ◽  
Aqeel Ahmed Shah ◽  
Syed Nizam Uddin Shah Bukhari ◽  
Arshad Iqbal ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Process Parameters ◽  
Acid Treatment ◽  
Research Work ◽  
Intermediate Stage ◽  
Catalytic Performance ◽  
Montmorillonite Clay ◽  
Parameters Optimization ◽  
Reaction Performance ◽  
Montmorillonite Catalyst

The cyclisation of citronellal to isopulegol is a significant intermediate stage in the production of menthols. In this research work, the effects of acid treatment on montmorillonite clay have been investigated and used in citronellal cyclisation reactions. Furthermore, the effects of acid treatment and hetero-poly acid impregnation have been determined on the textural and catalytic properties of montmorillonite clay. The designed catalysts were characterized by XRD, N2 sorption, and NH3- TPD techniques. Acid treatment of montmorillonite resulted in the enhancement of surface area and pore volume. The catalytic activity and selectivity parameters were lessened due to the severe leaching of Al ions from tetrahedral crystalline structures (e.g., weakened structure and loss of acidity). Among all prepared materials, the heteropoly acid supported HCl treated montmorillonite catalyst was observed as a more active, stable, and selective catalyst that showed the highest catalytic performance in citronellal cyclisation under optimized process parameters. The catalytic activity and selectivity were enhanced with rising mesoporosity and acidity parameters due to HCl acid treatment and HPA impregnation.

Comparative study of glycerol conversion to polyglycerol via conventional and microwave irradiation reactor

2019 ◽  
Vol 16 ◽  
pp. 2101-2107
Author(s):  
Muhammad Sajid ◽  
Muhammad Ayoub ◽  
Yoshimitsu Uemura ◽  
Suzana Yusup ◽  
Mahmood Saleem ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Comparative Study ◽  
Glycerol Conversion

Microwave assisted synthesis of substituted metallophthalocyanines and their catalytic activity in epoxidation reaction

2005 ◽  
Vol 09 (03) ◽  
pp. 163-169 ◽  
Author(s):  
Farzad Bahadoran ◽  
Solmaz Dialameh
Keyword(s):  
Catalytic Activity ◽  
Reaction Time ◽  
Microwave Irradiation ◽  
Microwave Assisted Synthesis ◽  
Free Condition ◽  
Catalytic Activities ◽  
Microwave Assisted ◽  
Solvent Free Condition ◽  
Epoxidation Reaction ◽  
Phthalocyanine Ring

Substituted iron and cobalt phthalocyanines are easily prepared by microwave irradiation of the starting materials under solvent free condition, which reduced reaction time considerably. The synthesized metallophthalocyanines (octachloro-, tetranitro-, tetracarboxy- or polyphthalocyanine) are used as epoxidation catalysts of cyclooctene in homogeneous and heterogeneous conditions by iodosylbenzene as an oxidant. Their catalytic activities have shown that the electron withdrawing groups on the phthalocyanine ring have a very small effect on stability of the catalyst during the reactions.

An efficient combination of Zr-MOF and microwave irradiation in catalytic Lewis acid Friedel–Crafts benzoylation

2016 ◽  
Vol 45 (18) ◽  
pp. 7875-7880 ◽  
Author(s):  
Tan L. H. Doan ◽  
Thong Q. Dao ◽  
Hai N. Tran ◽  
Phuong H. Tran ◽  
Thach N. Le
Keyword(s):  
Catalytic Activity ◽  
Microwave Irradiation ◽  
Lewis Acid ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Highly Porous ◽  
Organic Framework

The catalytic activity of a highly porous and stable zirconium-based metal–organic framework in the benzoylation reaction was enhanced by microwave irradiation.

scholarly journals Application of corncob residue-derived catalyst in the transesterification of glycerol with dimethyl carbonate to synthesize glycerol carbonate

BioResources ◽  
2019 ◽  
Vol 15 (1) ◽  
pp. 142-158 ◽  
Author(s):  
Song Wang ◽  
Jianye Wang ◽  
Patrick U. Okoye ◽  
Shuang Chen ◽  
Xinshu Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Structural Investigation ◽  
Dimethyl Carbonate ◽  
Low Cost ◽  
Molar Ratio ◽  
Glycerol Carbonate ◽  
Mineral Salts ◽  
Glycerol Conversion ◽  
Catalyst Amount ◽  
High Basicity

Corncob was calcined within a temperature range of 300 °C to 700 °C to prepare a series of corncob residue catalysts for the transesterification of glycerol with dimethyl carbonate (DMC) to synthesize glycerol carbonate (GC). Among the catalysts, the corncob residue catalyst obtained through calcination of corncob at 500 °C (CCR-500) showed a relatively high basicity and satisfactory catalytic activity. The structural investigation results indicated that CCR-500 was composed of carbon material and some alkaline mineral salts. Using CCR-500 as the catalyst, a glycerol conversion of 98.1% and a GC yield of 94.1% were achieved when the reaction was performed at 80 °C for 90 min, with a catalyst amount of 3 wt% and glycerol to DMC molar ratio of 1:3. The comparison of CCR-500 with the reported catalysts indicated that the CCR-500 was a low-cost, high-active, and easily-accessible catalyst for the transesterification of glycerol with DMC.

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