Production of chemicals via tandem conversion of bio-oil derived fractions

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL Journal of Environmental Chemical Engineering Pub Date : 2025-02-01 Epub Date: 2024-12-09 DOI:10.1016/j.jece.2024.115050

Evgeny Naranov , Alexey Sadovnikov , Olga Arapova , Alexander Guda , Konstantin Dementev , Ashot Arzumanyan , Gleb Kubrin , Dmitry Kholodkov , Alexander Zagrebaev , Kaige Wang , Zhongyang Luo , Anton Maximov

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Abstract

Studying chemical production from biomass is essential for developing sustainable and eco-friendly alternatives to fossil-derived chemicals, reducing greenhouse gas emissions, and promoting a circular bioeconomy. In this study a new biomass upgrading route was proposed including extraction of phenolic fraction followed by catalytic hydroconversion and then dehydration to olefins. The conversion of bio-oil fraction into olefins was developed using a continuous-flow setup with two reactors for tandem hydrogenation – dehydration process (225 °C in the 1st reactor with 2 % Ru over titanosilicalite-1 (TS-1) catalyst, 160 °C in the 2nd reactor with BEA catalyst, 5 MPa H₂, LHSV 1.5 h⁻¹). The optimized mild conditions were determined for each stage of the catalytic conversion process, which allowed us to obtain cyclohexene from bio-oil-derived compounds with a selectivity of up to 70 %. The olefin fraction was further transformed to silicon-organic chemicals via hydrosilylation on Pt catalyst. Using in situ DRIFT technique and in situ X-ray absorption spectroscopy (XAS) we determined the mechanism of selective hydrodeoxygenation and evolution of Ru species.

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通过生物油衍生馏分的串联转化生产化学品

研究生物质化学生产对于开发可持续和生态友好的化石衍生化学品替代品、减少温室气体排放和促进循环生物经济至关重要。本研究提出了一种新的生物质升级路线，即提取酚类馏分，催化加氢转化，然后脱水制烯烃。生物油馏分转化为烯烃，采用连续流装置，采用两个反应器进行串联加氢-脱水过程（第一反应器225℃，2 % Ru，钛硅石-1 （TS-1）催化剂，第二反应器160℃，BEA催化剂，5 MPa H2, LHSV 1.5 h−1）。对催化转化过程的每个阶段确定了优化的温和条件，使我们能够从生物油衍生化合物中获得选择性高达70 %的环己烯。在Pt催化剂上通过硅氢化反应将烯烃馏分进一步转化为硅有机化合物。利用原位漂移技术和原位x射线吸收光谱（XAS）研究了钌的选择性加氢脱氧和演化机理。

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来源期刊

Journal of Environmental Chemical Engineering Environmental Science-Pollution

CiteScore

11.40

自引率

6.50%

发文量

2017

审稿时长

27 days

期刊介绍： The Journal of Environmental Chemical Engineering (JECE) serves as a platform for the dissemination of original and innovative research focusing on the advancement of environmentally-friendly, sustainable technologies. JECE emphasizes the transition towards a carbon-neutral circular economy and a self-sufficient bio-based economy. Topics covered include soil, water, wastewater, and air decontamination; pollution monitoring, prevention, and control; advanced analytics, sensors, impact and risk assessment methodologies in environmental chemical engineering; resource recovery (water, nutrients, materials, energy); industrial ecology; valorization of waste streams; waste management (including e-waste); climate-water-energy-food nexus; novel materials for environmental, chemical, and energy applications; sustainability and environmental safety; water digitalization, water data science, and machine learning; process integration and intensification; recent developments in green chemistry for synthesis, catalysis, and energy; and original research on contaminants of emerging concern, persistent chemicals, and priority substances, including microplastics, nanoplastics, nanomaterials, micropollutants, antimicrobial resistance genes, and emerging pathogens (viruses, bacteria, parasites) of environmental significance.