Development of Carbon–Silica Composite Materials and Their Studying and Testing for Preparing Heterogeneous Biocatalysts for the Low-Temperature Synthesis of Esters | Sciact - CRIS-система Института катализа

Development of Carbon–Silica Composite Materials and Their Studying and Testing for Preparing Heterogeneous Biocatalysts for the Low-Temperature Synthesis of Esters Научная публикация

Журнал

Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210

Вых. Данные

Год: 2023, Том: 64, Номер: 2, Страницы: 201–214 Страниц : 14 DOI: 10.1134/S0023158423020039

Ключевые слова

carbon–silica composit, multiwalled carbon nanotubes, lipase adsorption, biocatalysts, esterification

Авторы

Kovalenko G.A. ¹ , Perminova L.V. ¹ , Goidin V.V. ¹ , Zavorin A.V. ¹ , Moseenkov S.I. ¹ , Kuznetsov V.L. ¹

Организации

1	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia

Информация о финансировании (1)

Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)

0239-2021-0005

Carbon–silica composite materials (CSCMs) containing different amounts of silica and carbon components are obtained using two silica precursors (silica sol and silane) and multiwalled carbon nanotubes (MWNTs). At the initial stage of obtaining CSCMs by method 1, a fine MWNT powder is subjected to impregnation by moisture capacity with silica sol; in accordance with method 2, MWNTs are treated with tetraethoxysilane and then subjected to hydrolysis and polycondensation. The silica (SiO2) content in the composites is varied in a range of 3–60 wt %. After drying and an appropriate heat treatment at 250–350°C, the composite materials are studied by various physicochemical methods, namely, nitrogen porosimetry, electron microscopy, X-ray fluorescence analysis, and thermogravimetric analysis. It is found that the parameters, including texrural characteristics, significantly differ depending on the chemical composition of the CSCMs. Thus, with an increase in the SiO2 content, the specific surface area of the composite materials increases (by a factor of 2) and the pore diameter distribution curves exhibit maxima (at 20–40 nm). The composite materials are studied as adsorbing supports for preparing heterogeneous biocatalysts (BCs) for the low-temperature synthesis of esters, in which the active component is lipase immobilized exclusively on the carbon surface of the nanotubes. With a decrease in the MWNT content in the composite materials, the enzyme activity and operational stability of the BCs, which are measured in the esterification of heptanoic acid (С7) with butanol (С4), monotonically decrease; at the maximum SiO2 content (58 wt %), the activity decreases by a factor of 2–8.

Kovalenko G.A. , Perminova L.V. , Goidin V.V. , Zavorin A.V. , Moseenkov S.I. , Kuznetsov V.L.
Development of Carbon–Silica Composite Materials and Their Studying and Testing for Preparing Heterogeneous Biocatalysts for the Low-Temperature Synthesis of Esters
Kinetics and Catalysis. 2023. V.64. N2. P.201–214. DOI: 10.1134/S0023158423020039 WOS Scopus РИНЦ CAPlusCA OpenAlex

Коваленко Г.А. , Перминова Л.В. , Гойдин В.В. , Заворин А.В. , Мосеенков С.И. , Кузнецов В.Л.
Получение композитных углерод-силикатных материалов, их исследования и испытания для приготовления гетерогенных биокатализаторов низкотемпературного синтеза сложных эфиров
Кинетика и катализ. 2023. Т.64. №2. С.227-242. DOI: 10.31857/S045388112302003X РИНЦ OpenAlex

Поступила в редакцию:	21 сент. 2022 г.
Принята к публикации:	3 нояб. 2022 г.
Опубликована в печати:	1 апр. 2023 г.
Опубликована online:	16 июн. 2023 г.

Web of science:	WOS:001011416800009
Scopus:	2-s2.0-85161969423
РИНЦ:	54050178
Chemical Abstracts:	2023:1256898
Chemical Abstracts (print):	183:215787
OpenAlex:	W4380760385

БД	Цитирований
РИНЦ	1
OpenAlex	1
Scopus	1
Web of science	1