The reason for the increase of desulfuration effect of modification by Zn-Al gel may be that the zeolite by modification enhances the supply ability of active hydrogen, which promotes saturation and cracking of thiophene.

• Zn-Al改性能增加分子筛的脱硫效果，其原因可能是增加了分子筛的供氢能力，形成表面活性氢，促使噻吩饱和、开环裂化。