分子筛铈掺杂催化剂的制备及其催化合成绿色甲醇研究

Study on the preparation of molecular sieve cerium-doped catalyst and its catalytic synthesis of green methanol

为解决传统甲醇合成工艺完全依赖化石燃料且伴随大量CO_(2)排放等问题,开发了一种新型生物质绿色甲醇生产工艺。采用浸渍法制备了分子筛铈掺杂铜锌催化剂,并将其应用于生物质合成气催化加氢制备绿色甲醇。系统考察了铈掺杂含量、反应温度、体积空速和反应压力等关键工艺参数对绿色甲醇转化率和选择性的影响。结果表明,在铈掺杂含量为5%、反应温度为240℃、体积空速为5000/h、反应压力为3.0 MPa的优化条件下,甲醇的转化率和选择性分别达到96.5%、98.5%。这种高效的生物质绿色甲醇合成工艺不仅可以减少对化石燃料的依赖,还能有效利用生物质资源,实现碳中和目标。为生物质绿色甲醇的工业化生产提供了重要的技术支持,对推动清洁能源产业发展具有重要意义。

To address the challenges of traditional methanol synthesis,which relies heavily on fossil fuels and results in significant carbon dioxide emissions,this study developed a novel biomass-based green methanol production process.A cerium-doped copper-zinc molecular sieve catalyst was prepared using the impregnation method and applied to the catalytic hydrogenation of biomass-derived syngas for methanol production.Key process parameters such as cerium doping content,reaction temperature,space velocity,and reaction pressure were systematically investigated for their effects on methanol conversion rate and selectivity.The results showed that under optimized conditions,with cerium doping content of 5%,reaction temperature of 240℃,space velocity of 5000/h,and reaction pressure of 3.0 MPa,the conversion rate and selectivity of methanol reached 96.5%and 98.5%,respectively.This efficient biomass-based green methanol synthesis process not only reduces dependence on fossil fuels but also effectively utilizes biomass resources,contributing to carbon neutrality.The study provides essential technical support for the industrial production of biomass-based green methanol and is significant for promoting the development of the clean energy industry.