C+10重芳烃催化加氢脱烷基反应研究

用等体积浸渍法制备了单层分散的MoO₃/γ-Al₂O₃催化剂。以C⁺₁₀重芳烃为原料，用固定床反应器考察了所制备的催化剂加氢脱烷基性能。研究表明，MoO₃/γ-Al₂O₃是C⁺₁₀重芳烃加氢脱烷基反应的高活性催化剂，并考察该催化剂在不同工艺条件下的加氢脱烷基性能。在反应温度（550～575） ℃、压力5 MPa、空速（1.0 ～1.5） h^-1和氢烃物质的量比为7～10条件下，C⁺₁₀重芳烃转化率达67%以上，C^-₉芳烃的选择性超过80%。100 h的性能评价结果表明，该催化剂具有较好的稳定性。

Study on catalytic hydrodealkylation of C10+ heavy aromatics

MoO₃/γ-Al₂O₃ catalyst with monolayer dispersion was prepared by incipient-wetness impregnation. Catalytic behaviors of the catalyst for hydrodealkylation of commercial C⁺₁₀ heavy aromatics and effects of reaction conditions on the hydrodealkylation results were investigated. C⁺₁₀ heavy aromatics conversion of over 67%, and selectivity to C^- ₉ aromatics of over 80% were obtained under reaction condition as follows: T=550 ℃, P=5 MPa, WHSV＝(1.0-1.5) h^-1 , hydrogen-to-hydrocarbons molar ratio 7-10. 100-hour run results showed that the MoO₃/γ-Al₂O₃ catalyst exhibited good stability.