The stability of catalyst cobalt sulfonated phthalocyanine(CoSPc) used in liquified petroleum gas sweetening process was researched by ultraviolet-visible spectrometry method in alkaline solution.

• 结果表明,由于氧与磺化酞菁钴形成活性很低的双核二氧聚合物,催化剂在碱液中不稳定,尤其在氧存在下易失活。