摘要
在５ｍｌ固定床反应器中使用ＫＤＤ－１２催化剂由合成气合成低碳醇的实验表明，压力、温度、空速等对催化剂合成醇性能影响明显，增加压力、空速可以提高低碳醇的收率和合成醇选择性，对合成低碳醇有利；升高反应温度可提高低碳醇收率，但选择性下降。在３８５℃，１４．０ＭＰａ，１１０００ｈ－１条件下，低碳醇收率为４１６．７ｍｌ／Ｌｃａｔ·ｈ，醇选择性为８２％，ＣＨ３ＯＨ／Ｃ２醇＝２．７７。产物分布符合Ｓｃｈｕｌｚ－Ｆｌｏｒｙ定律。该催化剂活性高，反应稳定性好，抗硫中毒能力强，且具有反应过程中不需补充硫的优点。具有较好的工业应用前景。
he mixed alcohols synthesis from syngas on a KDD-12 sulfided Mo-based catalyst was investigated with a 5ml fixed bed reactor. The results show that the reaction performance is influenced by temperature, total pressure and space velocity remarkably. The increase of total pressure and space velocity is beneficial to raise the space-time-yield (STY) and the selectivity of mixed alcohols. The increase of temperature is also favourable to the increase of STY, but the alcohols selectivity is reduced. Under the reaction conditions of 385℃,14。OMPa and 11000h-1,the STY= 416. 7ml/L cat. h, the selectivity=82%, and the ratio of C1OH/C2+OH=2. 77. The distribution of alcohols is in fairly good agreement with the Schulz-Flory law.The KDD-12 catalyst possesses excellent activity, durability and sulfur-resistence ability. In a durability test of 1300h, the activity has not shown remarkable decrease, and the sulfur supplement is not necessary during the reaction. It has better prospects in industrial applications.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
1995年第5期1-5,共5页
Natural Gas Chemical Industry
基金
国家自然科学基金
关键词
催化剂
低碳醇
KDD-12
合成气
sulfided Mo-based catalyst,synthesis of mixed alcohols, reaction conditions, durability
