1997年8月对日，由洛阳石化工程公司炼制研究所开发研制的重油直接裂解制乙烯催化剂（DeM－5型），在北京通过总公司技术鉴定。由工程院院土和著名专家、教授匕人组成的鉴定委员会认为：该接触剂在降低反应温度、提高乙烯等目的产品产率和抗水热失活能力等方面有新的突破，属国 August 1997 Japan, by the Luoyang Petrochemical Engineering Research Institute developed the heavy oil direct cracking ethylene catalyst (DeM-5 type), in Beijing through the head office of technical appraisal. The appraisal committee composed of experts from the academy of engineering and the famous expert and professor dagger thinks that the contact agent has a new breakthrough in reducing the reaction temperature, improving the yield of products such as ethylene and the ability of inactivating against water and heat,