当前位置：
X-MOL 学术
›
Green Chem.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
From glucose-based carbohydrates to phenol-rich bio-oils integrated with syngas production via catalytic pyrolysis over an activated carbon catalyst
Green Chemistry ( IF 9.3 ) Pub Date : 2018-06-13 , DOI: 10.1039/c8gc00593a Yayun Zhang 1, 2, 3, 4 , Hanwu Lei 1, 2, 3, 4 , Zixu Yang 1, 2, 3, 4 , Dengle Duan 1, 2, 3, 4 , Elmar Villota 1, 2, 3, 4 , Roger Ruan 4, 5, 6
Green Chemistry ( IF 9.3 ) Pub Date : 2018-06-13 , DOI: 10.1039/c8gc00593a Yayun Zhang 1, 2, 3, 4 , Hanwu Lei 1, 2, 3, 4 , Zixu Yang 1, 2, 3, 4 , Dengle Duan 1, 2, 3, 4 , Elmar Villota 1, 2, 3, 4 , Roger Ruan 4, 5, 6
Affiliation
|
The catalytic pyrolysis of carbohydrates over a phosphoric acid-activated carbon catalyst (ACC) was investigated to obtain phenol-rich bio-oils and syngas production in a facile fixed bed reactor for the first time. The central composite design (CCD) was adopted to optimize the experimental operating conditions of glucose catalytic pyrolysis, where the effects of reaction temperatures and ratios of catalyst to reactant on product distributions were studied. The main chemical components of the obtained catalytic bio-oils from glucose were phenols, ketones, and anhydrosugars, in which the selectivity of phenols ranged from 4.8 to 100% depending on various reaction conditions. The highest selectivity of phenols was achieved at a reaction temperature of 450 °C with a catalyst to reactant ratio of 1. Carbon monoxide, carbon dioxide, methane, and hydrogen were the main gas fractions in the gaseous products, where high concentrations of carbon monoxide (50.2%) and hydrogen (9.2%) could be attained. Additionally, the catalytic pyrolysis of cellulose with different catalyst to reactant ratios at a reaction temperature of 450 °C was also investigated and the results exhibited a similar phenomenon to that of glucose. A high selectivity of phenols (96.7%) could also be achieved integrated with a high concentration of carbon monoxide (42.1%). The mechanism of phenol generation was further discussed and the “phenol pool” was proposed to describe the catalytic function of the ACC in the catalytic conversion of volatiles into phenols. Our findings suggest that the catalytic pyrolysis of renewable and earth-abundant carbohydrates over the ACC might provide a novel and viable route to generate high-purity phenols to ultimately advance the utilization of biomass energy.
中文翻译：
从葡萄糖基碳水化合物到富含酚的生物油，以及通过活性炭催化剂上的催化热解与合成气生产相结合的产品
研究了碳水化合物在磷酸活化碳催化剂（ACC）上的催化热解，首次获得了在固定床反应器中富含苯酚的生物油和合成气的生产。采用中央复合设计（CCD）优化了葡萄糖催化热解的实验操作条件，在其中研究了反应温度和催化剂与反应物的比例对产物分布的影响。由葡萄糖获得的催化生物油的主要化学成分是苯酚，酮和脱水糖，其中苯酚的选择性取决于各种反应条件，范围为4.8％至100％。在450°C的反应温度下，催化剂与反应物的比例为1时，苯酚的选择性最高。气态产物中主要的气体成分是氢和氢，一氧化碳（50.2％）和氢（9.2％）的浓度很高。此外，还研究了在450°C的反应温度下具有不同催化剂与反应物比率的纤维素的催化热解作用，结果显示出与葡萄糖相似的现象。结合高浓度的一氧化碳（42.1％）也可以实现高选择性的苯酚（96.7％）。进一步讨论了苯酚的生成机理，并提出了“苯酚池”来描述ACC在挥发物催化转化为苯酚中的催化作用。
更新日期：2018-07-16
中文翻译：
从葡萄糖基碳水化合物到富含酚的生物油，以及通过活性炭催化剂上的催化热解与合成气生产相结合的产品
研究了碳水化合物在磷酸活化碳催化剂（ACC）上的催化热解，首次获得了在固定床反应器中富含苯酚的生物油和合成气的生产。采用中央复合设计（CCD）优化了葡萄糖催化热解的实验操作条件，在其中研究了反应温度和催化剂与反应物的比例对产物分布的影响。由葡萄糖获得的催化生物油的主要化学成分是苯酚，酮和脱水糖，其中苯酚的选择性取决于各种反应条件，范围为4.8％至100％。在450°C的反应温度下，催化剂与反应物的比例为1时，苯酚的选择性最高。气态产物中主要的气体成分是氢和氢，一氧化碳（50.2％）和氢（9.2％）的浓度很高。此外，还研究了在450°C的反应温度下具有不同催化剂与反应物比率的纤维素的催化热解作用，结果显示出与葡萄糖相似的现象。结合高浓度的一氧化碳（42.1％）也可以实现高选择性的苯酚（96.7％）。进一步讨论了苯酚的生成机理，并提出了“苯酚池”来描述ACC在挥发物催化转化为苯酚中的催化作用。
京公网安备 11010802027423号