硅胶负载型咪唑离子液体催化苯直接氧化制苯酚的生产方法

• Format: Patent
• Language: Chinese
• Published: 16.01.2018
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

本发明涉及种苯直接氧化制苯酚的生产方法。其特征是在无溶剂温和的反应体系中，以苯为原料，30％过氧化氢为氧化剂，在功能化硅胶负载型咪唑离子液体催化作用下，通过高选择性氧化反应合成了高纯度苯酚。该反应体系具有条件温和，苯酚收率和选择性高，操作简单，同时催化剂可以良好回收重复利用，无生态环境风险，是种高效、环境友好的生产方法，有利于工业化生产。 The invention relates to a production method for preparing phenol by directly oxidizing benzene. The method is characterized in that benzene is taken as a raw material, 30% hydrogen peroxide is taken as an oxidant, and high-purity phenol is synthesized by virtue of high-selectivity oxidizing reaction under the catalysis of silica gel-loaded imidazole ionic liquid. The reaction system has the advantages that the conditions are mild, the yield and the selectivity of phenol are high, the operation is simple, and meanwhile, the catalyst can be well recycled and repeatedly utilized, so that the ecological environment risk is avoided. The production method is efficient, environmentally friendly and beneficial to industrial production.