丁烷中硫化物对Pt-Sn催化剂脱氢性能的影响

Effect of Sulfide on Pt-Sn Catalyst Dehydrogenation Performance

以三种不同硫含量的混合丁烷为原料,在相同工艺条件下,对丁烷脱氢Pt-Sn催化剂的催化性能进行了比较,结果表明:原料中的硫含量是影响催化剂催化性能及寿命的一个重要因素,硫含量越高,其寿命越短,选择性和转化率下降速率越快。烧焦再生后的催化剂活性无法恢复。

The catalytic function of butane Pt-Sn dehydrogenation catalyst were compared under the same process conditions, using three kinds of mixture butane with different sulfur content as raw material. The results show that：sulfur content is an important factor to influence the catalytic performance and life of Pt-Sn catalyst, the higher the sulfur content, the shorter the life, the faster the selectivity and the conversion rate decrease;the catalyst activity cannot recover by using coke-burning regeneration.