Biolubricant from spent bleaching earth oil through propylene glycol ester synthesis

2020 ◽  
Author(s):  
Sukirno ◽  
Ade Sari Triana ◽  
Muhammad Rifqi
Keyword(s):  
Propylene Glycol ◽  
Bleaching Earth ◽  
Ester Synthesis ◽  
Glycol Ester

The influence of molecular mass of sulfated propylene glycol ester of low-molecular-weight alginate on anticoagulant activities

2007 ◽  
Vol 43 (7) ◽  
pp. 3009-3015 ◽  
Author(s):  
Chang-Zheng Lin ◽  
Hua-Shi Guan ◽  
Hai-Hua Li ◽  
Guang-Li Yu ◽  
Cai-Xia Gu ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Molecular Mass ◽  
Propylene Glycol ◽  
Low Molecular Weight ◽  
Glycol Ester

Solid-State Characterization of Novel Propylene Glycol Ester Solvates Isolated from Lipid Formulations

2015 ◽  
Vol 12 (7) ◽  
pp. 2551-2557 ◽  
Author(s):  
Paroma Chakravarty ◽  
Sanjeev Kothari ◽  
Alan Deese ◽  
Joseph W. Lubach
Keyword(s):  
Solid State ◽  
Propylene Glycol ◽  
Glycol Ester ◽  
Lipid Formulations ◽  
Solid State Characterization

The effect of poly[hexanedioic acid-1,2-propylene-glycol] ester on the wear of steel

Wear ◽  
1999 ◽  
Vol 232 (1) ◽  
pp. 61-66 ◽  
Author(s):  
Junyan Zhang ◽  
Liming Yang ◽  
Weimin Liu ◽  
Qunji Xue
Keyword(s):  
Propylene Glycol ◽  
Glycol Ester ◽  
Hexanedioic Acid

Molecular dynamics of poly(propylene) glycol in nanometer confinements

2000 ◽  
Vol 10 (PR7) ◽  
pp. Pr7-271-Pr7-274 ◽  
Author(s):  
A. Schönhals ◽  
H. Goering ◽  
K.-W. Brzezinka ◽  
Ch. Schick
Keyword(s):  
Molecular Dynamics ◽  
Propylene Glycol ◽  
Poly Propylene

Hydrogenolysis of glucose and fructose in glycol solutions over CuO-MgO-ZrO2 catalyst

2020 ◽  
pp. 48-55
Author(s):  
M.E. Sharanda ◽  
◽  
E.A. Bondarenko ◽  
Keyword(s):  
Ethylene Glycol ◽  
Propylene Glycol ◽  
Flow Reactor ◽  
General Trend ◽  
Raw Materials ◽  
Reaction Products ◽  
Renewable Raw Materials ◽  
High Partial Pressure ◽  
Zro2 Catalyst ◽  
Phase Process

Ethylene glycol and propylene glycol are important representatives of polyols. On an industrial scale, they are obtained from petrochemical raw materials. Within a decade, significant efforts were made for the producing of polyols from biologically renewable raw materials - carbohydrates. The general trend for carbohydrate hydrogenolysis includes application of liquid-phase process with the use of modified metal-oxide catalysts, at 120-120 ° C and pressure of 3MPa or above. So high pressure is used for the reason to increase hydrogen solubility, and also due to the high partial pressure of low boiling solvents. We supposed that usage of high boiling solvents could allow hydrogenolysis to be performed at the lower pressure. Ethylene glycol and propylene glycol are of particular interest as such kind of solvent since they are both the main products of glucose hydrogenolysis. In this work, the process of hydrogenolysis of glucose and fructose over Cu / MgO-ZrO2 catalyst have been studied at temperature range of 160-200 °C and a pressure of 0.1-0.3 MPa in a flow reactor. The solvents were simultaneously the target products of the reaction - ethylene glycol and / or propylene glycol. Gas chromatography and 13C NMR were used for the reaction products identification. It was found that the solubility of glucose in propylene glycol is 21 % by weight, and in ethylene glycol 62% by weight. It was pointed out that the process of hydrogenolysis can take place at a pressure close to atmospheric. Under these conditions, the conversion of hexoses reaches 96-100 %. The reaction products are preferably propylene glycol and ethylene glycol. The total selectivity for C3-2 polyols is 90-94 %, that is higher than in the hydrogenolysis of glucose in aqueous solution.

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