首页|Pt/CaO材料催化糠醇加氢制备戊二醇

Pt/CaO材料催化糠醇加氢制备戊二醇

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通过浸渍法制备出一系列氧化钙负载铂金属催化材料,用于生物质基糠醇选择性加氢制备戊二醇研究.研究采用X射线衍射仪、扫描电子显微镜、CO2-程序升温脱附、N2等温吸附-脱附、X射线光电子能谱、热重-差热分析法等一系列表征手段,对合成的催化剂样品物理化学性质进行了系统表征.实验结果表明,Pt/CaO-600催化剂表现出优异的催化活性,在4MPa氢压、210℃反应温度条件下,糠醇转化率为99.8%,1,2-戊二醇和1,5-戊二醇收率分别可达48.6%和21.5%.催化剂的优异性能可归因于作为载体的CaO提供了适宜的碱性位点,有利于糠醇开环反应的发生,进而提高了糠醇转化率与戊二醇选择性.同时,催化剂还表现出了优异的循环使用性能,经重复使用4次后,其催化糠醇转化率可达96.5%,1,2-戊二醇和1,5-戊二醇的收率分别为40.3%和17.0%.
Catalytic hydrogenation of furfuryl alcohol into pentanediol over Pt/CaO materials
A series of Pt/CaO catalysts were synthesized via impregnation method and applied for the selective hydrogenation of bio-based furfuryl alcohol into pentanediol.The physicochemical characteristics of the as-prepared catalysts were comprehensively characterized through X-ray diffractometer,scanning electron microscopy,CO2-temperature programmed desorption,N2 isothermal adsorption-desorption,X-ray photoelectron spectroscopy,and thermogravimetric-differential thermal analysis.The experimental results showed that the Pt/CaO-600 catalyst exhibited excellent catalytic activity towards furfuryl alcohol hydrogenation.Gratifyingly,the furfuryl alcohol conversion achieved 99.8%,and the yields of 1,2-pentanediol and 1,5-pentanediol were 48.6%and 21.5%respectively at 210℃under 4MPa H2.The good activity of Pt/CaO could be attributed to the fact that the carrier CaO provided appropriate amounts of basic sites,which facilitated the ring-opening reaction of furfuryl alcohol,thus improving the conversion and pentanediol selectivity.Moreover,the as-prepared Pt/CaO also exhibited excellent performance in recycling experiments,wherein the yields of 1,2-pentanediol and 1,5-pentanediol reached 40.3%and 17.0%respectively with 96.5%furfuryl alcohol conversion after being repeated four times.

furfuryl alcoholcatalysishydrogenationpentanediol

萧垚鑫、张军、单锐、袁浩然、陈勇

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华南农业大学生物质工程研究院,广东 广州 510642

中国科学院广州能源研究所,广东 广州 510640

中国科学院可再生能源重点实验室,广东广州 510640

广东省新能源和可再生能源研究开发与应用重点实验室,广东 广州 510640

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糠醇 催化 加氢 戊二醇

国家自然科学基金面上项目能源清洁利用国家重点实验室开放基金中国科学院青年创新促进会会员项目

51976222ZJU-CEU20200232023367

2024

化工进展
中国化工学会,化学工业出版社

化工进展

CSTPCD北大核心
影响因子:1.062
ISSN:1000-6613
年,卷(期):2024.43(3)
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