Mongolian Journal of Chemistry 2021-07-26T09:46:31+00:00 Academician J. Temuujin Open Journal Systems <p>Published by the Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences.</p> <p>The Mongolian Journal of Chemistry is included on <a title="DOAJ" href="" target="_blank" rel="noopener">DOAJ</a>,&nbsp;&nbsp;<a title="EBSCO" href="" target="_blank" rel="noopener">EBSCO Discovery Service</a>,&nbsp;&nbsp;<a title="Google Scholar" href="" target="_blank" rel="noopener">Google Scholar</a>,&nbsp; &nbsp;<a title="MJC" href="" target="_blank" rel="noopener">Dimensions</a>,&nbsp;&nbsp;<strong>CAS databases, <a title="CNKI" href="" target="_blank" rel="noopener">CNKI</a>,&nbsp;</strong>and&nbsp;<a title="MJC - Scopus" href="" target="_blank" rel="noopener"><strong>Scopus</strong></a></p> Synthesis of cuprous oxide nanocubes combined with chitosan nanoparticles and its application to p-nitrophenol degradation 2021-06-08T11:11:26+00:00 Tran Thi Bich Quyen Ngo Nguyen Tra My Do Thi Thuy Ngan Duy Toan Pham Doan Van Hong Thien <p>For the first time, cuprous oxide nanocubes (Cu<sub>2</sub>O NCBs) were successfully combined with chitosan nanoparticles (CS NPs) to generate Cu<sub>2</sub>O NCBs/CS NPs composites material with highly optical property and photocatalytic activity using a simple and eco-friendly synthetic approach at room temperature for 30 min. The synthesized Cu<sub>2</sub>O NCBs NPs/CS NPs were determined characterizations by Ultraviolet-visible spectroscopy (UV-vis), Fourier transform infrared spectroscopy (FTIR), X – ray Diffraction (XRD),&nbsp; Transmission Electron Microscope (TEM) and Energy-dispersive X-ray spectroscopy (EDX). Results show that the Cu<sub>2</sub>O NCBs/CS NPs composites have an average particle size of ~3-5 nm; in which, Cu<sub>2</sub>O has the form of nanocubes (Cu<sub>2</sub>O NCBs) with size ~3-4 nm and chitosan nanoparticles with spherical shape (CS NPs) with size ~4-5 nm. In addition, the percent (%) composition of elements present in Cu<sub>2</sub>O NCBs/CS NPs composites material have been obtained respective: Cu (23.99%), O (38.18%), and C (33.61%). Moreover, Cu<sub>2</sub>O NCBs/CS NPs composites material was also investigated for photocatalytic activity applied in p-nitrophenol degradation. The obtained results showed that the catalytic capability of Cu<sub>2</sub>O NCBs/CS NPs for p-nitrophenol reduction reached the highest efficiency &gt;55% in the treatment time of 25 min, and this efficiency was higher than that result of using ZnO@chitosan nanoparticles (ZnO@CS NPs) catalyst under the same conditions for comparison.</p> 2021-09-09T00:00:00+00:00 Copyright (c) 2021 Tran Thi Bich Quyen, Ngo Nguyen Tra My, Do Thi Thuy Ngan, Duy Toan Pham, Doan Van Hong Thien The general characteristics and organic matters of therapeutic mud from Lake Noot (Mongolia) 2021-07-26T09:46:30+00:00 Ganzaya Gankhurel Nomintsetseg Byambajav Bayaraa Batnasan Dolmaa Gania <p>In this investigation, we examined the chemical composition, physicochemical&nbsp;properties, and organic matter of therapeutic mud from Lake Noot in the Arkhangai&nbsp;province of Mongolia. The therapeutic mud from “Lake Noot” is used in the pelotherapy&nbsp;of local health care services for some time but without deep characterization. Due to&nbsp;this, a study of therapeutic mud samples was required.<br> Our research concentrated on identifying general characteristics, organic matter,&nbsp;mineralogical, and chemical composition of therapeutic mud at two different Lake Noot&nbsp;sites. Results showed that the therapeutic mud belongs to the continental hydrogen&nbsp;sulfide sticky mud type. The total organic matter in the therapeutic mud of Lake Noot&nbsp;was 14.44%. Total organic matter contains a humic substance of 42.17%, lipid&nbsp;16.62%, and carbohydrate 7.13%. A total of 172 compounds were identified in the&nbsp;dissoluble organic matter of therapeutic mud, mainly of natural origin, using the gas&nbsp;chromatography-mass spectrometry (GC/MS) method. The dominant compounds&nbsp;were saturated and unsaturated hydrocarbons with 13–44 carbon atoms and<br> carboxylic acids and their ethers. Some of the identified organic compounds have&nbsp;been reported antimicrobial, anti-inflammatory, antibacterial, and antifungal&nbsp;properties.</p> 2021-07-26T00:00:00+00:00 Copyright (c) 2021 Ganzaya Gankhurel, Nomintsetseg Byambajav, Bayaraa Batnasan, Dolmaa Gania Synthetic fatty acid from crude oil of Tamsagbulag petroleum deposit (Mongolia) 2021-07-26T09:46:31+00:00 Myagmargerel Bayanmunkh Khulan Bayasgalan Gantsetseg Byambasuren Khongorzul Batchuluun Tuya Murneren <p>In this work, we studied to obtain synthetic fatty acids raw materials to produce surfactants&nbsp;and various detergents from paraffin. The solid paraffin extracted from the Tamsagbulag&nbsp;petroleum deposit was 46 mass%, distilled 350-450°C, by complexing with urea.&nbsp;Experimental study indicates paraffin's physicochemical characteristics from this&nbsp;petroleum are more suitable to use in the production of synthetic fatty acids. By solid&nbsp;paraffin oxidation, we obtained 33.01% of the synthetic fatty acids containing&nbsp;monocarboxylic acids.<br>We suggest obtaining the synthetic fatty acid by oxidation process in normal condition from&nbsp;petroleum paraffin.</p> 2021-07-26T00:00:00+00:00 Copyright (c) 2021 Myagmargerel Bayanmunkh, Khulan Bayasgalan, Gantsetseg Byambasuren, Khongorzul Batchuluun, Tuya Murneren