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首页> 外文期刊>Catalysis science & technology >Effects of graphitization of carbon nanospheres on hydrodeoxygenation activity of molybdenum carbide
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Effects of graphitization of carbon nanospheres on hydrodeoxygenation activity of molybdenum carbide

机译：影响石墨化的碳团簇hydrodeoxygenation碳化钼的活动

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摘要

Cellulose-derived carbon materials were prepared and employed as supports for molybdenum carbide catalysts, and their catalytic activity for hydrodeoxygenation of maize oil was tested in an autoclave under different reaction conditions. Carbon nanospheres, which can be simply synthesized via hydrothermal carbonization and whose morphology can be easily controlled, were employed as supports to study the relationship between the graphitization degree of carbon supports and the hydrodeoxygenation activity of supported molybdenum carbide catalysts. Ferric chloride was employed as a graphitization reagent to modify the surface properties of the carbon nanospheres. Graphitized carbon nanosphere materials with appropriate FeCl3 to carbon ratios (1-50%) showed outstanding properties to work as supports for Mo2C catalysts. Suitable reaction conditions for comparing these catalysts were found out by testing carbon nanosphere supported Mo2C catalysts with different loadings (5-40%) at several temperatures (513-553 K) and initial hydrogen pressures (2.0-3.0 MPa). The best conversion and hydrocarbon yield they reached were 91.1% and 88.3%, which were 21% and 31% higher than the results from the ungraphitized carbon nanosphere supported catalyst under the same conditions, respectively. Cellulose-derived carbon materials might be competitive with carbon nanotubes as catalyst supports in the field of hydrodeoxygenation and maybe in other areas.
机译：Cellulose-derived碳材料准备和碳化钼作为支持催化剂,其催化活性hydrodeoxygenation玉米的石油是一个测试高压灭菌器在不同的反应条件。碳团簇,可以简单通过水热碳化和合成的形态很容易控制,是吗用作支持研究的关系碳的石墨化度之间支持的hydrodeoxygenation活动支持碳化钼催化剂。氯化采用石墨化试剂修改碳的表面性质团簇。材料适当FeCl3碳比率(1 - 50%)表现出杰出的属性来工作支持Mo2C催化剂。条件比较这些催化剂通过测试发现碳nanosphere支持Mo2C催化剂不同载荷(5 - 40%)几个温度(513 - 553 K)和初始氢气压力(2.0 - -3.0 MPa)。转换和碳氢化合物的产量达到分别为91.1%和88.3%,21%和31%高于ungraphitized的结果碳nanosphere支持下的催化剂相同的条件下,分别。碳材料可能与碳竞争碳纳米管作为催化剂领域的支持hydrodeoxygenation也许在其他领域。

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