Results 1 to 10 of about 2,593,431 (288)

Microwave-assisted preparation of naphthenic acid esters [PDF]

open access: yesJournal of the Serbian Chemical Society, 2006
The synthesis of esters of natural petroleum acids of the naphthenic type assisted with microwave irradiation under the conditions of acid catalysis was carried out with various alcohols: methanol, ethanol, n-butanol and tert-butyl alcohol.
VERA CIRIN-NOVTA   +5 more
doaj   +4 more sources

MANNITE ESTERS OF SULFURIC ACID. [PDF]

open access: yesJournal of the American Chemical Society, 1913
n ...
W R Bloor
exaly   +3 more sources

A non-conventional biodiesel process route from waste palm fatty acid distillate and ethyl acetate via esterification [PDF]

open access: yesScientific Reports
The high cost and food competition associated with conventional biodiesel feedstocks limit its widespread adoption. This research investigates using palm fatty acid distillate (PFAD), a low-cost industrial by-product which is high in free fatty acids ...
Akintomiwa Olumide Esan   +5 more
doaj   +2 more sources

Evaluation of corrosion resistance of coatings applied to Process equipment used in yellowcake production plant [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2023
Austenitic stainless steels can withstand acidic environments relatively well. The sulfuric acid used in the process lines and the relatively high temperatures of the liquid (60oC) can cause general corrosion and pitting of the tank, which may eventually
N. Royaee   +4 more
doaj   +1 more source

Study of the reaction of olefins with acetic acid [PDF]

open access: yesE3S Web of Conferences, 2023
The purpose of this work is to study the esterification of liquid olefins with acetic acid in the presence of catalysts and to study the structure and properties of the synthesized saturated esters.
Mahmudova F.   +4 more
doaj   +1 more source

Synthesis Some of New Substituted 1,3,4-Thiadiazole and 1,2,4-Triazole [PDF]

open access: yesمجلة التربية والعلم, 2020
The aim of this paper, the synthesis of new series of substituted 1,3,4-thaidiazole and 1,2,4-triazol from reaction of the carboxylic acid (2-naphthoic acid,4-methyl benzoic acid) with absolute ethanol in the presence of concentrated sulfuric acid to ...
Tamara alsafar, amal Ali
doaj   +1 more source

Esterification of malic acid on various catalysts

open access: yesТонкие химические технологии, 2020
Objectives. The study aims to identify the optimal choice of an effective catalyst for the esterification of malic acid to produce esters of high purity. Methods. To determine the qualitative and quantitative composition of reaction masses, the following
N. S. Kuzmina   +2 more
doaj   +1 more source

Esters of ricebran oil with short chain alcohols as alternative fuel for diesel engines

open access: yesEgyptian Journal of Petroleum, 2016
The potential of ricebran oil as a feedstock for the production of a fuel for diesel engines alternative to regular diesel fuel has been assessed. Esterification rate of crude ricebran oil with methyl alcohol was studied using different volumetric ratios
F.A. Zaher   +3 more
doaj   +1 more source

Polymerization Parameters of Methacrylic Acid Esters as Viscosity Index Improvers in Lubricants [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2019
Hypothesis: A wide range of additives can be utilized to create desirable properties in lubricants. Polymers, as viscosity index improvers, are important additives in oils to improve their viscosity at different temperatures.
Seyed mehrdad Jalilian, Farshid Ziaee
doaj   +1 more source

Metabolism of cholestane-3β,5α,6β-triol. II. Identification of two major neutral metabolites in the rat

open access: yesJournal of Lipid Research, 1971
Rats were given a single oral dose of cholestane-3β,5α,6β-triol-4-14C, and their feces were collected. The two major neutral metabolites were separated and isolated by use of solvent fractionation and chromatographic methods.
HENRY G. ROSCOE, MARVIN J. FAHRENBACH
doaj   +1 more source

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