Hydrodesulfurization Reaction of Thiophene over Ni-Mo/Aluminum Borate Catalysts

• Main Authors: Tzung-Ying Ho, 何宗穎
• Other Authors: Hui Chen, Yu Wen Chen
• Format: Others
• Language: zh-TW
• Published: 1993
• Online Access: http://ndltd.ncl.edu.tw/handle/30623715671333264525

碩士 === 國立中央大學 === 化學工程研究所 === 81 === A series of aluminum borates (AB) with various Al/B mole ratios was prepared by the copreciptation method. These samples were used to be Ni-Mo sulfide of thiophene hydrodesulfurization (HDS) and were characterized with respect to surface areas, pore volume, pore size distribution and thermal stabilities . The re- sults indicated that the catalyst with Al/B ratio of 10 gives the highest activity. Hydrodesulfurization(HDS) of thiophene over NiMo/AB catalyst was carried out in a integral-type micro-differential reactor at 667K and atmosphere . The results showed that the Al/B mole ratio has little effect on either the stability or the activity besides NiMo/AlO whose activity is poor . TPR patterns of cata- lysts shows the low temperature reduction peak T■■sharply dec- rease at first , and then nearly maintained at a constant value as a increasing the boron content . The activation energy for thiophene HDS is 16.44 kcal/ mol. Incorporation of little boron into the alumina framework had little effect on the specific surface area. Where as , when the amounts of incorporation boron is large , the specific surface area is strongly influenced by the boron content . The results showed that the NiMo/AB catalysts are more active then the con- ventional NiMo/AlOcatalyst in HDS reaction . From activity viewpoint, NiMo/AB catalyst may be useful and can be used as HDS catalyst.