Hydrogenolysis and hydrocracking of the carbon-oxygen bond: I. Hydrocracking of some simple aromatic O-compounds
Hydrogenolysis and hydrocracking of the carbon-oxygen bond: I. Hydrocracking of some simple aromatic O-compounds
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DOI：
10.1016/0021-9517(82)90164-6
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发表时间：
1982-09
影响因子：
7.3
通讯作者：
J. Bredenberg;Matti Huuska-;J. Räty;M. Korpio
中科院分区：
文献类型：
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作者：
J. Bredenberg;Matti Huuska-;J. Räty;M. Korpio
研究了Ni-Mo/SiO2-Al 2 O3加氢裂化催化剂对苯酚、邻甲酚、苯甲醚和愈创木酚的处理效果。实验在固定床反应器中在250-350 °C、5 MPa氢气压力和LHSV 0.5- 2.5h-1下进行。苯酚和邻甲酚在所研究的反应条件下是相对稳定的。苯甲醚和愈创木酚容易通过烷基-氧键的断裂反应。以苯甲醚为原料，主要产物为苯酚、邻甲酚和2，6-二甲基苯酚。愈创木酚首先反应生成邻苯二酚，邻苯二酚是250-275 °C下的主要产物。在较高温度下，苯酚的形成占主导地位，邻甲酚和间甲酚的形成量大致相等。在愈创木酚的情况下，烃的形成很少，但在325-350 °C下，从苯甲醚获得可观量的环状C6-C7烃。对催化剂的稳定性进行了描述，并对反应机理进行了初步探讨。
Treatment of phenol,o-cresol, anisole, and guaiacol on a Ni-Mo/SiO2-Al2O3hydrocracking catalyst is reported. The experiments were carried out in a fixed bed reactor at 250–350 °C, 5 MPa hydrogen pressure, and LHSV 0.5-2.5 h−1. Phenol ando-cresol were found to be relatively stable under the reaction conditions studied. Anisole and guaiacol reacted readily through cleavage of the alkyl-oxygen bond. Phenol,o-cresol, and 2,6-dimethylphenol were obtained as the main products from anisole. Guaiacol reacted first to pyrocatechol, which was the main product at 250–275 °C. At higher temperatures formation of phenol dominated,o- andm-cresol were formed in approximately equal amounts. The formation of hydrocarbons was minor in the case of guaiacol but from anisole appreciable amounts of cyclic C6-C7hydrocarbons were obtained at 325–350 °C. The stability of the catalyst is described and tentative reaction mechanisms are discussed.