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Efficient Preparation of Bio-based n-Butane Directly from Levulinic Acid over Pt/C
Industrial & Engineering Chemistry Research ( IF 4.2 ) Pub Date : 2020-03-23 , DOI: 10.1021/acs.iecr.0c00255
Jun Jiang 1 , Teng Li 1 , Kexin Huang 1 , Guangyu Sun 1 , Jing Zheng 1 , Jinlong Chen 1 , Weiran Yang 1
Affiliation  

As a bio-based platform chemical, it is desirable to convert levulinic acid (LA) to varieties of value-added biochemicals. n-Butane, mainly from nonrenewable fossil resources, is a basic chemical to produce some important chemicals, such as butadiene and ethylene. In this paper, 95.5% yield of n-butane was obtained from LA in one-step over base-treated Pt/C at around 300 °C in 4 h. The reaction pathway was confirmed to be the hydrodeoxygenation of LA to valeric acid (VA) and then the VA decarboxylation to n-butane by kinetic studies. Base-treated Pt/C had better reactivity due to its improved decarboxylation activity. Detailed characterization of the catalyst revealed that the Pt particle size is the key reason for the activity improvement, and further studies showed that Pt nanoparticles with a size of 2–4 nm showed the highest decarboxylation activity. This is the first report on the direct conversion of LA to n-butane.

中文翻译:

在Pt / C上直接由丙氨酸直接制备生物基丁烷

作为基于生物的平台化学品,希望将乙酰丙酸(LA)转换为各种增值的生物化学品。丁烷主要来自不可再生的化石资源,是生产某些重要化学品(例如丁二烯和乙烯)的基本化学品。本文在约300°C,4 h的条件下,在碱处理的Pt / C上一步一步从LA中获得了95.5%的丁烷收率。确认该反应途径为LA加氢脱氧为戊酸(VA),然后VA脱羧为n-丁烷的动力学研究。碱处理的Pt / C由于其改善的脱羧活性而具有更好的反应性。催化剂的详细表征表明,Pt粒径是提高活性的关键原因,进一步的研究表明,尺寸为2-4 nm的Pt纳米颗粒具有最高的脱羧活性。这是有关将LA直接转化为丁烷的第一份报告。
更新日期:2020-03-24
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