Химические науки список научных статей

Based on today´s information, the areas of application of sorbents are different depending on which products are received. Sorbents are mainly used for water purification, extraction of precious metals, purification and bleaching of vegetable oils, purification of oil and petroleum products,...

Clay soils have been and remain one of the most important industrial minerals. Clay and clay minerals are widely used in many areas of our society. They are important in geology, agriculture, construction, technology industries. Some more important applications include ceramics, paper, paints,...

The article studied the hydrodynamic properties of adhesives based on oxidized starch with rheological modifiers. The development is aimed at solving the problems of wet strength of glue joints based on them when used for surface gluing of corrugated boards.

The article presents the research results of synthesizing weakly acidic polycondensation type catio-nites based on naphthalene homologs isolated from local raw materials and studying their structure using various physicochemical analysis methods. Pyrolysis oil, a secondary product of the pyrolysis...

The optimal conditions of the modification process with 2-hydroxyethylcarbamate are defined in the article. Temperature dependence of carbon dioxide sorption on modified silica gels was studied.

The solubility of components in the NH4H2PO4-NH2C2H4OH-H2O system was studied from the temperature of complete freezing (–53.0 °C) to 68.0 °C. A polythermal solubility diagram has been constructed, on which the regions of crystallization of ice, monoammonium phosphate, NH4H2PO4·NH2C2H4OH,...

The study aims to propose solutions to limit the possibility of flame propagation on the vertically placed surface of wood materials used in Vietnam. In order to come up with solutions, it is necessary to understand the factors that affect the ability to spread flame on the surface of the...

In our previous study, we demonstrated methods for the synthesis of the coordination compound 6-benzylaminopurine with hexahydrate cobalt-II nitrate. Continuing our research, we studied the influence of the resulting coordination connection on the shipping of the Bukhara‑102 cottons.

A new cycloartane glycoside, cycloascidoside D which is determined as 3-O-β-D-(2-OAc)-xylopyranoside‑24Rcycloartane‑3β,6α,16β,24, 25-pentaol, was isolated from the aerial part of the plant Astragalus mucidus Bunge (Leguminosae). Structure of this glycoside was proven by chemical transformations and ...

By the interaction of anthranilic acid with formamide, an almost quantitative yield of quinazoline‑4-oh was obtained. Optimal reaction conditions were established: temperature 130–140 °C, duration 2 hours. Quinazoline‑4-oh hydrochloride was obtained from quinazoline‑4oh by passing hydrogen chloride ...

The results of the study of reactions of N-chloroacetylation of toluidine isomers are presented in the article. Methods for purification of reaction products have been developed. Structure of the obtained compounds has been confirmed by means of 1Н and 13С NMR spectroscopy.

The article presents the results obtained in determining the dielectric constant, electrical conductivity and viscosity of solutions containing Sb(III) and Bi(III) ions, individual solvents and their mixtures containing indifferent salts of different nature: potassium acetate, sodium, lithium...

Представлены результаты исследования объемной активности радона-222 в воздухе помещений Бай-Тайгинского, Монгун-Тайгинского, Улуг-Хемского, Кызылского, Тандынского, Тере-Хольского, Сут-Хольского, Чеди-Хольского, Эрзинского, ДзунХемчикского, Тес-Хемского кожуунов Республики Тыва. В качестве...

В работе изучены физико-химические характеристики минеральных источников Овюрского района Республики Тыва: Аксы-Туруг, Талдыг-Чарык, Улаатай, Доргун. Пробы воды отбирали летом и осенью 2022 и 2023 года. Изучали следующие показатели: температура воды, минерализация, сухой остаток, водородный...

Modern oligomer technology is focused on developing a new generation of oligomer materials with specific functional properties, showing promising applications in various cutting-edge fields. A key aspect in achieving this objective is the advancement of film-forming material production techniques...

в статье проведено теоретическое исследование влияния сельскохозяйственных обработок почвы на содержание гумуса, агрофизические и агрохимические свойства. Рассмотрены способы обработки, в значительной степени снижающие плодородие и те, благодаря которым плодородие почвы можно сохранить или...

Аминометильные производные нафтолов являются реакционноспособными веществами и поэтому они могут служить исходным продуктом для получения различных соединений. Помимо реакций гидроксильной группы и ароматического кольца, эти соединения также вступают в реакцию, в которой аминогруппа замещается на...

During the thermal catalytic processing of worn-out transport tires using modified catalysts, the formation of substances that improve its quality in the resulting fuel is achieved. The article discusses the increase in resistance to coking and poisoning due to the use of ACM catalyst in the...

В статье приведены результаты исследования полисахаридного комплекса кожуры дыни melo mill, семейства Тыквенные (Cucurbitaceae,) Установлено, что углеводный комплекс в кожуре дыни представлен водорастворимыми полисахаридами, пектиновыми веществами, гемицеллюлозой А и Б. Приведены методы экстракции...

В данной статье приведены синтез супрамолекулярных комплексов лагохирзина в различных молярных соотношениях с глицирризиновой кислотой. Обсуждены их ИК-спектры, а также некоторые физико-химические свойства полученных комплексов.