当前位置：
X-MOL 学术
›
ChemCatChem
›
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.)
Hydroconversion of Perhydrophenanthrene over Bifunctional Pt/H‐USY Zeolite Catalyst
ChemCatChem ( IF 3.8 ) Pub Date : 2020-02-03 , DOI: 10.1002/cctc.201902372 Larissa Brito 1 , Gerhard D. Pirngruber 1 , Emmanuelle Guillon 1 , Florian Albrieux 1, 2 , Johan A. Martens 3
ChemCatChem ( IF 3.8 ) Pub Date : 2020-02-03 , DOI: 10.1002/cctc.201902372 Larissa Brito 1 , Gerhard D. Pirngruber 1 , Emmanuelle Guillon 1 , Florian Albrieux 1, 2 , Johan A. Martens 3
Affiliation
|
In petroleum refining, middle distillates are produced via hydroisomerization/hydrocracking processes using bifunctional catalysts often containing ultrastable Y (USY) zeolite. Petroleum fractions serving as feedstock for hydrocracking processes contain a majority of (poly)cyclic hydrocarbon molecules. Few studies on reaction mechanisms of hydrocracking of such polycyclic compounds are available. In this study the tricyclic phenanthrene molecule was used as model compound. Phenanthrene was hydrogenated on a Pt/alumina pre‐catalyst to perhydrophenanthrene, and subsequently hydrocracked over Pt/H‐USY zeolite. The feed consisted of 3 wt.% phenanthrene dissolved in n‐heptane. The reaction was performed at 280 °C and 60 bar, with a molar H2 to total hydrocarbon ratio of 7 mol/mol. The reaction products were analyzed using GCxGC‐FID/MS. This detailed analysis enabled identification of the reaction scheme involving skeletal isomerization, ring opening and fragmentation. New mechanistic insight is gained on relative reactivities of bridged and non‐bridged tricyclic naphthenes. Preferential hydrocracking routes were identified. The study provides insight in the products to be expected from polycyclic hydrocarbon isomerization and hydrocracking.
中文翻译：
双功能Pt / H-USY沸石催化剂对全氢菲进行加氢转化
在石油精炼中，中间馏分是通过加氢异构化/加氢裂化工艺生产的，使用的双功能催化剂通常含有超稳定的Y（USY）沸石。用作加氢裂化工艺原料的石油馏分包含大部分（多）环烃分子。关于这种多环化合物的加氢裂化反应机理的研究很少。在这项研究中，三环菲分子被用作模型化合物。在Pt /氧化铝预催化剂上将菲氢化为全氢菲，然后在Pt / H-USY沸石上加氢裂化。进料由溶解在正庚烷中的3 wt。％菲组成。反应在280°C和60 bar的条件下，摩尔H 2进行与总烃的比例为7mol / mol。使用GCxGC-FID / MS分析反应产物。这项详细的分析能够确定涉及骨架异构化，开环和断裂的反应方案。关于桥联和非桥联三环环烷烃的相对反应性，获得了新的力学见解。确定了优先的加氢裂化路线。该研究提供了对多环烃异构化和加氢裂化预期产品的见解。
更新日期：2020-02-03
中文翻译：
双功能Pt / H-USY沸石催化剂对全氢菲进行加氢转化
在石油精炼中，中间馏分是通过加氢异构化/加氢裂化工艺生产的，使用的双功能催化剂通常含有超稳定的Y（USY）沸石。用作加氢裂化工艺原料的石油馏分包含大部分（多）环烃分子。关于这种多环化合物的加氢裂化反应机理的研究很少。在这项研究中，三环菲分子被用作模型化合物。在Pt /氧化铝预催化剂上将菲氢化为全氢菲，然后在Pt / H-USY沸石上加氢裂化。进料由溶解在正庚烷中的3 wt。％菲组成。反应在280°C和60 bar的条件下，摩尔H 2进行与总烃的比例为7mol / mol。使用GCxGC-FID / MS分析反应产物。这项详细的分析能够确定涉及骨架异构化，开环和断裂的反应方案。关于桥联和非桥联三环环烷烃的相对反应性，获得了新的力学见解。确定了优先的加氢裂化路线。该研究提供了对多环烃异构化和加氢裂化预期产品的见解。
京公网安备 11010802027423号