Core–shell magnetic mesoporous N-doped silica nanoparticles: solid base catalysts for the preparation of some arylpyrimido[4,5-b]quinoline diones under green conditions

Preparation of core–shell magnetic mesoporous N-doped silica nanoparticles as a new solid base catalyst was studied. obtained catalyst was used for the preparation of some arylpyrimido[4,5-b]quinoline diones under green conditions.

Download Full-text

Utilization of Carbide Lime Waste as Base Catalyst for Biodiesel Production

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i4.35.23092 ◽

2018 ◽

Vol 7 (4.35) ◽

pp. 700 ◽

Cited By ~ 1

Author(s):

Koguleshun Subramaniam ◽

Sasidevan Munusamy ◽

Fei-ling Pua ◽

Mohd Aizat Mohd Nasir ◽

Rohaya Othman ◽

...

Keyword(s):

Ester Group ◽

Catalytic Performance ◽

Biodiesel Production ◽

Strength Analysis ◽

Solid Base ◽

Base Catalyst ◽

Solid Base Catalyst ◽

X Ray ◽

Solid Base Catalysts ◽

Base Catalysts

Calcium rich solid base catalyst was synthesized from local waste carbide lime and its catalytic performance was evaluated via biodiesel production. Carbide lime waste was used to produce CLW-I and CLW-II solid base catalyst using different preparation methods. Characterization including base strength analysis, scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD) were investigated. Catalytic strength was examined by deploying the solid base catalysts for transesterification reaction of palm oil. Fourier Transform Infra-red (FTIR) was used to analyze the presence of ester group in biodiesel. The yield of biodiesel conversion was calculated based on the mass of biodiesel and glycerol. The highest biodiesel conversion rate of 75.30% was achieved by CLW-I solid base catalyst at 9% loading. The good catalytic performance of carbide lime waste derived solid base catalysts proves that it has high potential to replace the usage of conventional catalyst in the biodiesel industry.

Download Full-text

Influence of Preparation Conditions of the Solid Base Catalyst on the Performance of Synthesizing Polyglycerol

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.549.109 ◽

2012 ◽

Vol 549 ◽

pp. 109-112

Author(s):

Jia Wei Qu ◽

Min Wei Wang ◽

Ren Lang Wang

Keyword(s):

Reaction Time ◽

Catalyst Preparation ◽

Solid Base ◽

Polymerization Degree ◽

Base Catalyst ◽

Solid Base Catalyst ◽

Solid Base Catalysts ◽

Base Catalysts ◽

Preparation Conditions ◽

Catalyst Type

Different solid base catalysts used for the polymerization of glycerol were prepared by impregnation. Catalyst type and the preparation conditions were optimized on the base of polymerization degree. Results showed: the best catalyst was KF/Al2O3, and optimal condition for catalyst preparation was as follows: loading of 40% KF, calcinations temperature 600°C. The polymerization degree of 5.92 was obtained under the following reaction condition: the amount of catalyst 11.62,reaction temperature 250°C, reaction time 4 h.

Download Full-text

Experiment Study on Biodiesel Produced from Soybean Oil by Solid Base Catalysts

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.236-238.641 ◽

2011 ◽

Vol 236-238 ◽

pp. 641-644 ◽

Cited By ~ 1

Author(s):

Feng Xian Ma ◽

Jing Xia Li

Keyword(s):

Soybean Oil ◽

Raw Materials ◽

Molar Ratio ◽

Solid Base ◽

Base Catalyst ◽

Solid Base Catalyst ◽

Solid Base Catalysts ◽

Base Catalysts ◽

Ester Exchange ◽

Ester Exchange Reaction

In this paper, biodiesel is successfully produced by the ester exchange reaction with solid base catalyst of K2O/Ti-HMS based on soybean oil as raw materials. The result of which shows that K2O/Ti-HMS has good ester exchange activity as solid base catalyst and the catalyst easily is separated from products. By single factor experiment, the influence of K2O load, molar ratio of methanol and oil and catalyst dosage on the biodiesel conversion rate is researched and the optimal relationship between the above parameters is obtained.

Download Full-text

Deacidification of Jatropha Curcas Oil by Extraction for Biodiesel Production

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.291-294.207 ◽

2013 ◽

Vol 291-294 ◽

pp. 207-211

Author(s):

Xue Jun Liu ◽

Hai Yan Zhang ◽

Ning Ai ◽

Mei Zhen Lu ◽

Yu Min Li ◽

...

Keyword(s):

Fatty Acids ◽

Jatropha Curcas ◽

Acid Value ◽

Biodiesel Production ◽

Solid Base ◽

Base Catalyst ◽

Solid Base Catalyst ◽

Ethanol Extraction ◽

Jatropha Curcas Oil ◽

Base Catalysts

The acid value of jatropha curcas oil is 9.41mgKOH/g. The most of fatty acids should be removed if base catalysts are adopted to catalyze the transesterification reaction for biodiesel production in case of soap formation. In this study, methanol and ethanol were adopted to extract the fatty acids in jatropha curcas oil. Then, it was catalyzed by calcium methoxide for biodiesel production. The extracted fatty acids can be used to produce biodiesel at supercritical or sulfuric acid conditions. The results indicated that the acid value of jatropha curcas oil decrease to 0.31 mgKOH/g from 9.41 mgKOH/g using ethanol extraction for 3 times at 25°C. The biodiesel yield exceeded 96% using solid base catalyst. The advantages of methanol and ethanol extractions are low oil loss and high biodiesel yield.

Download Full-text