Processes for the alcoholysis, inclusive of transesterification and/or disproportionation, of reactants are disclosed. The alcoholysis process may include feeding reactants and a trace amount of soluble organometallic compound to a reactor comprising a solid alcoholysis catalyst, wherein the soluble organometallic compound and the solid alcoholysis catalyst each independently comprise a Group II to Group VI element, which may be the same element in various embodiments. As an example, diphenyl carbonate may be continuously produced by performing transesterification over a solid catalyst followed by disproportionation, where a trace amount of soluble organometallic compound is fed to the transesterification reactor. Also disclosed is a process for reactivating a spent solid alcoholysis catalyst, such as a catalyst useful for transesterifications and/or disproportionations, the process including removing polymeric materials deposited on the catalyst and re-depositing catalytically active metals on the solid catalyst.
公开了有关醇解反应的过程,包括酯交换和/或不均化。醇解过程可能包括将反应物和微量可溶性有机
金属化合物送入包含固体醇解催化剂的反应器中,其中可溶性有机
金属化合物和固体醇解催化剂各自独立地包含第二至第六族元素,这些元素在不同实施例中可能是相同的元素。例如,可以通过在固体催化剂上进行酯交换然后进行不均化来连续生产二苯
碳酸酯,其中微量可溶性有机
金属化合物被送入酯交换反应器。还公开了一种用于再生用于酯交换和/或不均化的废弃固体醇解催化剂的过程,包括去除沉积在催化剂上的聚合物材料并在固体催化剂上重新沉积具有催化活性的
金属。