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Experimental study on catalytic cracking of rice straw by HZSM-5 zeolite to produce bio-oil
- Low-Carbon Chemistry and Chemical Engineering Vol. 50, Issue 10, Pages: 56-64(2025)
- 作者机构：
浙江科技大学 环境与资源学院，浙江 杭州 310023
- 作者简介：
- 基金信息：
DOI：10.12434/j.issn.2097-2547.20240434
CLC： TK6;TQ426Received：25 October 2024，
Revised：2025-01-03，
Published：25 October 2025
- 稿件说明：
移动端阅览
乔文朴,张妍,高壮志等.HZSM-5分子筛催化裂解稻草秸秆制生物油的实验研究[J].低碳化学与化工,2025,50(10):56-64.
QIAO Wenpu,ZHANG Yan,GAO Zhuangzhi,et al.Experimental study on catalytic cracking of rice straw by HZSM-5 zeolite to produce bio-oil[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(10):56-64.
乔文朴,张妍,高壮志等.HZSM-5分子筛催化裂解稻草秸秆制生物油的实验研究[J].低碳化学与化工,2025,50(10):56-64. DOI： 10.12434/j.issn.2097-2547.20240434.
QIAO Wenpu,ZHANG Yan,GAO Zhuangzhi,et al.Experimental study on catalytic cracking of rice straw by HZSM-5 zeolite to produce bio-oil[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(10):56-64. DOI： 10.12434/j.issn.2097-2547.20240434.
摘要
当今全球聚焦低碳、可持续能源，生物质液化作为关键可再生能源转化路径备受关注。传统均相催化剂用于生物质液化时，因与生物油同相导致生物油分离提纯困难，且催化剂的强酸碱特性对环境造成严重污染。为解决这些问题，选择具有良好水热稳定性、高比表面积和独特孔道结构的分子筛作为催化剂。采用离子交换法对NaZSM-5分子筛进行改性制得了HZSM-5分子筛，通过EA、XRD、FTIR和SEM等表征手段，以商用HZSM-5分子筛为对照分析了分子筛改性前后的结构与形貌变化。以HZSM-5分子筛为催化剂，通过单因素实验探究了稻草秸秆液化实验中各实验条件对液化得率的影响。结果表明，在反应温度为180 ℃、液固比（液化剂与稻草秸秆的质量比）为5:1、反应时间为105 min和催化剂用量为10%（催化剂与液化剂的质量比）时，液化得率最高（67.8%）。对比生物油与原油的理化性质，发现二者油品区别较大。生物油具有黏度大、呈酸性以及羟值和残碳率高等特性，在制备化学品等领域具有很好的应用前景。
Abstract
At present
the world is focusing on low-carbon and sustainable energy. Biomass liquefaction
as a crucial pathway for renewable energy conversion
has attracted extensive attention. When traditional homogeneous catalysts are used in biomass liquefaction
it is difficult to separate and purify the bio-oil due to the co-phase with the bio-oil. Moreover
their strong acid-base properties are likely to cause serious environmental pollution problems. In order to solve the above problems
zeolites with great hydrothermal stability
high specific surface area and unique pore structure were selected as catalysts. The NaZSM-5 zeolite was modified through ion exchange method to prepare HZSM-5 zeolite. Characterization techniques including EA
XRD
FTIR and SEM were employed to analyze structural and morphological changes of zeolites before and after modification
using commercial HZSM-5 zeolite as reference. Employing HZSM-5 zeolite as catalyst
single-factor experiments were conducted to investigate the effects of various experimental conditions on liquefaction yield in rice straw liquefaction. The results show that the maximum liquefaction yield is 67.8% under optimal conditions: reaction temperature of 180 ℃
liquid-to-solid ratio (mass ratio of liquefaction agent to rice straw) of 5:1
reaction duration of 105 min
and catalyst dosage of 10% (mass percentage relative to liquefaction agent). Comparative analysis of physicochemical properties between bio-oil and crude oil reveales significant differences. The bio-oil exhibits distinctive characteristics including high viscosity
acidic nature
elevated hydroxyl value and carbon residue rate
demonstrating promising application prospects in chemical production fields.
关键词
Keywords
references
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