| 标题 |
 Efficient upgrading of polyolefin plastics into C5–C12 gasoline alkanes over a Pt/W/Beta catalyst Pt/W/Beta催化剂上聚烯烃塑料高效改质为C5-C12汽油烷烃
相关领域
聚烯烃
碳数
汽油
产量（工程）
催化作用
BETA（编程语言）
烷烃
材料科学
有机化学
碳纤维
化学工程
化学
冶金
复合材料
工程类
程序设计语言
图层（电子）
烷基
复合数
计算机科学
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| 其它 | A Pt/W/Beta catalyst was developed for direct and efficient hydrogenolysis of low density polyethylene (LDPE) into C5–C12 gasoline alkanes with a high yield of 63.6 wt% (yield of C1–C13 light alkanes is 94.0 wt%) at 250 °C and 3.0 MPa H2 within 1.0 h. The obtained gasoline alkanes have a narrow carbon number distribution and contain abundant mono-branched isomers, which were attributed to well-dispersed Pt species and proximity of the cooperating active sites, especially the moderate acidity upon the introduction of 0.5 wt% tungsten species. The catalyst was also applicable to hydrogenolysis of light low density polyethylene (LLDPE), high density polyethylene (HDPE) and polypropylene (PP) to obtain the valuable gasoline alkanes (C5–C12) in high yield (50.8–73.5 wt%). The C–C bond cleavage of plastics over the Pt/W/Beta catalyst was found to occur through medium to long-chain hydrocarbons (n-Cx, x > 13) based on experiments performed using docosane (n-C22 alkane) as the model feedstock |
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