Results 91 to 100 of about 575,314 (203)

Obtaining of glycerol carbonate from glycerol and CO2 using La and La/Zr oxides

, 2023
ilustraciones, fotografías, graficasEn este trabajo de investigación se realizó inicialmente una revisión del estado del arte sobre la reacción de carboxilación directa entre el glicerol y el CO2 para la obtención de carbonato de glicerol, abarcando ...
Quiroga Mateus, William Andrés
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Solvent-Free Glycerol Transesterification with Propylene Carbonate to Glycerol Carbonate over a Solid Base Catalyst

, 2017
Glycerol transesterification using propylene carbonate (PC) to glycerol carbonate (GC) could be efficiently performed under solvent-free conditions using solid base as catalysts involving non-noble metal oxide in combination with hydrotalcites (HTs ...
Sharda Kondawar (3832219), Chandrashekhar Rode (3343319)   +1 more
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Improving Glycerol Conversion by Implementing Recycle Streams and Reducing Distillation Steps in Glycerol Carbonate Production

Journal of Chemical Engineering Research Progress
The rising surplus of glycerol from biodiesel production drives the need for its valorization into high-value compounds such as glycerol carbonate (GC).
Dinanti Putrisia Wilujeng, Kezia Kollelsy, Distaria Puja Prathista, Sofiana Dwitasari   +3 more
doaj   +1 more source

Direct synthesis of glycerol carbonate from glycerol and carbon dioxide by Brønsted base catalysis

, 2018
The utilisation of carbon dioxide and renewable resources as feedstocks for the chemical industry is highly desirable due to fossil fuel depletion and climate change. Chemicals directly produced from these substrates could lead to a circular economy.
Schenk, Karolin
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K2 O/MgFe2 O4磁性固体碱催化剂的制备、表征 及催化酯交换制备碳酸甘油酯Preparation, characterisation and catalytic transesterification for the preparation of glycerol carbonate of magnetic solid base catalyst K2O/MgFe2O4

Zhongguo youzhi
为了解决生物柴油制备过程中副产物甘油过剩、碳酸甘油酯产率低和催化剂回收困难的问题，以聚乙二醇600（PEG-600）为模板和分散剂，采用溶胶凝胶法制备镁铁氧体（MgFe2O4），以其为载体，KNO3为活性组分前驱体，采用浸渍法制备K2O/MgFe2O4磁性固体碱催化剂。通过X射线衍射、 X射线光电子能谱、扫描电镜、CO2程序升温脱附(CO2-TPD)和磁性分析对催化剂进行表征，并将催化剂用于甘油与碳酸二甲酯酯交换制备碳酸甘油酯的反应中，考察其催化性能。结果表明：制备的K2O/MgFe2O4形成了K-Fe-
张昕，张萍波，范明明，冷炎，蒋平平 ZHANG Xin, ZHANG Pingbo, FAN Mingming, LENG Yan, JIANG Pingping
doaj   +1 more source

Sustainable joint solventless coproduction of glycerol carbonate and ethylene glycol via thermal transesterification of glycerol

, 2014
This study focuses on the thermal reaction between glycerol and ethylene carbonate to obtain glycerol carbonate and ethylene glycol under solventless homogeneous operation, the process being a transcarbonation of glycerol or a glycerolysis of ethylene ...
Fuente, E., González-Miquel, M., Ladero, M., Esteban Serrano, J.; id_orcid, Blanco, Á., García-Ochoa, F.   +5 more
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Conversion of glycerol to glycerol carbonate via transesterification using 1-Ethyl-3-Methylimidazolium acetate catalyst / Zati Ismah Ishak [PDF]

, 2018
In the present research, the synthesis of glycerol carbonate by transesterification of glycerol with diethyl carbonate in a green and efficient process catalyzed by ionic liquid was comparatively studied.
Zati Ismah, Ishak
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Synthesis Of Glycerol Carbonate From Glycerol And Urea Using Limestone As Catalyst Source

, 2019
Synthesis of Glycerol carbonate from glycerol and urea using limestone as a catalyst has been conducted. This study aims to make glycerol carbonate from glycerol and urea by utilizing scattered natural limestone widespread in Southeast Sulawesi as a ...
Megawati, Megawati
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Sustainable Mg-promoted biochar from pomegranate peel for glycerol carbonate synthesis: Response surface methodology optimization

Case Studies in Chemical and Environmental Engineering
Mesoporous Mg-promoted pomegranate peel biochar was developed as a low-cost and sustainable heterogeneous catalyst for glycerol carbonate (GC) synthesis via transesterification of glycerol with dimethyl carbonate (DMC).
Phonsan Saetiao, Jakkrapong Jitjamnong, Napaphat Kongrit   +2 more
doaj   +1 more source

Solvent-free synthesis of glycerol carbonate and glycidol from 3-chloro-1,2-propanediol and potassium (hydrogen) carbonate

, 2010
BACKGROUND: An indirect solvent-free synthetic approach for obtaining glycerol carbonate and glycidol from glycerol and CO2 through their more reactive and easily synthesizable derivatives 3-chloro-1,2-propanediol (HAL) and potassium (hydrogen) carbonate
Olga Gómez-Jiménez-Aberasturi, Pesquera-Rodríguez, Amaia, José R. Ochoa-Gómez, Camilo Ramírez-López, Gómez-Jiménez-Aberasturi, Olga, Alonso-Vicario, Ainhoa, Ramírez-López, Camilo, Jesús Torrecilla-Soria, Ochoa-Gómez, José R., Ainhoa Alonso-Vicario, Amaia Pesquera-Rodríguez, Torrecilla-Soria, Jesús   +11 more
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