Effect of metal salts impregnation and microwave-assisted solvent pretreatment on selectivity of levoglucosenone and levoglucosan from vacuum pyrolysis of ashe juniper waste

2019 ◽  
Vol 7 (1) ◽  
pp. 102796 ◽  
Author(s):  
Julius Choi ◽  
Hyungseok Nam ◽  
Sergio C. Capareda
Keyword(s):  
Metal Salts ◽  
Microwave Assisted ◽  
Vacuum Pyrolysis ◽  
Ashe Juniper

scholarly journals Fast track to nanomaterials: microwave assisted synthesis in ionic liquid media

RSC Advances ◽  
2014 ◽  
Vol 4 (27) ◽  
pp. 14149-14156 ◽  
Author(s):  
Michael T. Kessler ◽  
Maria K. Hentschel ◽  
Christina Heinrichs ◽  
Stefan Roitsch ◽  
Martin H. G. Prechtl
Keyword(s):  
Ionic Liquid ◽  
Metal Oxide ◽  
Fast Track ◽  
Metal Oxide Nanoparticles ◽  
Metal Salts ◽  
Microwave Assisted Synthesis ◽  
Oxide Nanoparticles ◽  
Liquid Media ◽  
Simple Metal ◽  
Microwave Assisted

Herein we present a general approach to metal and metal oxide nanoparticles using simple metal salts as starting materials.

Microwave-assisted Claisen Rearrangement of 1-Allyloxy-4-hydroxybenzene in the Presence of Metal Salt

2021 ◽  
Vol 07 ◽  
Author(s):  
Fumiyoshi Ozaki ◽  
Yutaka Okada
Keyword(s):  
Alkali Metal ◽  
Lewis Acid ◽  
Claisen Rearrangement ◽  
Metal Salt ◽  
Alkali Metal Salt ◽  
Metal Salts ◽  
Hydroxyl Group ◽  
Microwave Assisted ◽  
Ethereal Oxygen

: Microwave-assisted Claisen rearrangement of allyloxybenzene with a hydroxyl group was conducted in the presence of metal salts. The rearrangement was promoted in the presence of an alkali metal salt, because the reaction substrate was converted to a phenoxide-type ion, which can efficiently absorb microwaves. In contrast, a Lewis acid was strongly coordinated to the ethereal oxygen, and this structure could also absorb microwaves efficiently.

Microwave-assisted Conversion of Carbohydrates into 5-Hydroxymethylfurfural Catalyzed by ZnCl2

2010 ◽  
Vol 65 (2) ◽  
pp. 168-172 ◽  
Author(s):  
Baohui Zheng ◽  
Zhijie Fang ◽  
Jie Cheng ◽  
Yuhua Jiang
Keyword(s):  
Microwave Irradiation ◽  
Microwave Heating ◽  
Weight Ratio ◽  
Metal Salts ◽  
Sugar Solution ◽  
Microwave Assisted ◽  
Conventional Oil

A convenient system for producing 5-hydroxymethylfurfural (HMF) through dehydration of carbohydrates by microwave heating in the presence of ZnCl2 was studied. The use of ZnCl2 gave higher selectivity than other metal salts in the conversion of glucose. With ZnCl2 as catalyst, sucrose could be utilized effectively. Under the conditions of microwave irradiation (300 W, 8 min), HMF yields were 54.6, 55.1, and 80.6% from glucose, fructose and sucrose, whereas upon conventional oil bath heating (0.11 gmL−1 sugar solution, weight ratio of ZnCl2 to substrate = 1 : 4, 189 °C, 60 min) HMF yields from glucose, fructose and sucrose were only up to 37.7, 42.7, and 57.7%, respectively.

Solar Driven Microwave-Assisted Vacuum Pyrolysis of Plastic Wastes

2021 ◽  
Author(s):  
Debadyoti Ghosh ◽  
G S Taki ◽  
Ayush Bhattacharya ◽  
Anusha Chatterjee ◽  
Himeli Pandit
Keyword(s):  
Microwave Assisted ◽  
Vacuum Pyrolysis ◽  
Plastic Wastes

Microwave-assisted alcoholysis of furfural alcohol into alkyl levulinates catalyzed by metal salts

2016 ◽  
Vol 18 (6) ◽  
pp. 1516-1523 ◽  
Author(s):  
Yao-Bing Huang ◽  
Tao Yang ◽  
Meng-Chao Zhou ◽  
Hui Pan ◽  
Yao Fu
Keyword(s):  
Reaction Time ◽  
Furfuryl Alcohol ◽  
Metal Salt ◽  
Metal Salts ◽  
Short Reaction Time ◽  
Microwave Assisted ◽  
Alkyl Levulinates

The alcoholysis of furfuryl alcohol with different alcohols was carried out by using metal salt catalysts under microwave conditions, achieving high alkyl levulinates’ yields in a short reaction time.

scholarly journals One-Pot Synthesis of Metallopyrazinoporphyrazines Using 2,3-Diaminomaleonitrile and 1,2-Dicarbonyl Compounds Accelerated by Microwave Irradiation

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Ali Maleki ◽  
Ali Hossein Rezayan
Keyword(s):  
Microwave Irradiation ◽  
Metal Salts ◽  
Microwave Assisted Synthesis ◽  
One Pot ◽  
Dicarbonyl Compounds ◽  
Microwave Assisted ◽  
One Pot Synthesis

A one-pot microwave-assisted synthesis of metallopyrazinoporphyrazines as porphyrazine derivatives carrying six-membered pyrazine rings annulated at the periphery of the tetrapyrrolic macrocycle is described starting from 2,3-diaminomaleonitrile, 1,2-dicarbonyl compounds, metal salts, and urea.

scholarly journals Synthesis and characterization of metal–organic frameworks fabricated by microwave-assisted ball milling for adsorptive removal of Congo red from aqueous solutions

RSC Advances ◽  
2017 ◽  
Vol 7 (73) ◽  
pp. 46520-46528 ◽  
Author(s):  
Fu-hua Wei ◽  
Ding Chen ◽  
Zhao Liang ◽  
Shuai-qi Zhao ◽  
Yun Luo
Keyword(s):  
Ball Milling ◽  
High Efficiency ◽  
Low Cost ◽  
Metal Organic Frameworks ◽  
Metal Salts ◽  
Synthesis And Characterization ◽  
Adsorptive Removal ◽  
Microwave Assisted ◽  
Metal Organic

In this study, four metal–organic frameworks (MOFs) were prepared using a simple, low-cost, and high-efficiency technique utilizing simple carboxylic acids and metal salts by microwave-assisted ball milling.

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