III International Conference

PP-II-142Liquid phase hydrogenation of benzene was accomplished with the same seriescatalysts at a room temperature and 1 atm. Only one 0.5Ni 2 O 3·Ru 0.04 Ti 0.03 Si 0.97 O 2+δ catalystrevealed evident activity in so mild conditions. The conversion was 10(±0.4) %, and theprimary hydrogenation product was cyclohexane. It is interesting, however, that ~1wt% ofraw benzene was partly hydrogenated to cyclohexene.Hydrodesulfonation. The petroleum S-containing components are presented essentiallyby sulphides (65-90 %) and thiophenes (10-23 %); this fact predetermined the choice ofmodel compounds for desulfonation capacity tests of catalysts formed. Thus, 2-propil(S1)-and3,4-tetramethylenetiolanes (S2), and also thiophene (S3) were selected, being dissolved inhexane (0.8-1.2 wt%). The selected concentration was close to 200 ppm of sulfur thatcorrelated with their content in typical fractions, intended for petrol delivery. The test wasperformed on a quartz flow-through reactor provided with an immobile catalytic layer of3.3Ni 2 O 3·0.1TiO 2·3.2SiO 2 (S=140 m 2 /g) at temperatures 80-200 °С (1 atm., 7.1 h -1 ,H/S=1.5/1.0). The catalyst was established to display high desulfonation capacity attemperature 80 °С (Table). It is to be noted that catalyst further displayed isomerizationability at a temperature close to 150 °С and higher. Thus, there were up to 20-26 wt % ofС 6 -С 7 iso-HC in the case of S1 in the reaction products.Table. The hydrodesulfonation efficacy on 3.3Ni 2 O 3·0.1TiO 2·3.2SiO 2TemperatureConversion, % Efficiency, g s /(g-atom Ni· h),S1 S2 S3 S1 S2 S3°С80 - 97 - - 0.565 -100 100 97 83 0.575 0.565 0.399120 - 97 - - 0.565 -150 100 98 100 0.575 0.575 0.481200 100 98 100 0.575 0.576 0.481Oligomerization of olefines. To improve the yield of liquid products there is a need touse oligomerization catalysts for low molecular olefin HC. A temperature 150-400°С andpressure 10-40 atm. are common conditions for this process. In this case hexene-1 wasselected as a model HC, which oligomerization was accomplished in a liquid phase(temperature 60°С and pressure 1 atm.) on Zn 0.012 Co 0.012 Ce 0.012 Ti 0.03 Si 0.95 O 2+δ . The hexene-1conversion was 85-91% and correlated with conversion rate 0.65-0.70 mol/(g cat·h). The424