Open AccessThe structure of lignosulfonates for production of carbon catalyst support
Author(s) -
О Х Каримов,
Г. А. Тептерева,
И. А. Четвертнева,
Э. М. Мовсумзаде,
Э Х Каримов
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/839/2/022086
Subject(s) - lignosulfonates , catalysis , fourier transform infrared spectroscopy , chemistry , sulfuric acid , chemical engineering , sulfonic acid , infrared spectroscopy , organic chemistry , lignin , engineering
Wood pulp industry generates tons of lignosulfonate by-product waste every year. Rational utilization of lignosulfonates is limited due to non-uniform structure and complex chemical composition. However, presence of different functional groups allows for a broad range of industrial applications, including catalysis in polymer chemistry. Therefore, the aim of this study was to analyze structural composition of sodium lignosulfonate and its modified forms using Fourier transform infrared spectroscopy (FTIR). Sulfuric acid treatment of sodium lignosulfonate was hypothesized to enhance catalytic capacity of the original lignosulfonate by increasing the amount of sulfonic acid catalytic active sites inside the structure of the macromolecule. FTIR analysis identified structural features of the lignosulfonate-based catalysts and their catalytic potential was assessed via alcohol dehydration reaction. As a result, polymeric forms of lignosulfonate were successfully used as a carbon-based catalyst matrix.