TY - JOUR AU - Zh. K. Kairbekov, AU - S. M. Suimbayeva, AU - I. M. Jeldybayeva, AU - E. T. Yermoldina, PY - 2021/04/12 Y2 - 2024/03/29 TI - IINVESTIGATION OF THE CATALYTIC AND ISOMERIZATION ACTIVITY OF MULTI-COMPONENT SKELETAL NICKEL CATALYSTS IN THE HYDROGENATION OF HEXENE-1 JF - Известия НАН РК. Серия химии и технологии JA - SCT VL - IS - 2 SE - Статьи DO - UR - https://journals.nauka-nanrk.kz/chemistry-technology/article/view/196 SP - 58-64 AB - <p>In this work, the effect of the amount of catalyst, modifying additives, and the phase composition of<br>the alloys on the catalytic and isomerizing activity of skeletal in the hydrogenation reaction of hexane-1 is<br>investigated.<br>It has been shown that for all studied catalysts, the yield of products in the processes of migration and<br>isomerization depends very strongly on the weighed portion of the catalyst introduced into the reaction medium. So,<br>for example, the yield of hexane-2 with an increase in the catalyst weight increases linearly to 0.5g of nickel, while at<br>the initial stage of the reaction the yield of hexane-2 reaches 62%. With a further increase in the catalyst weight<br>(up to 1 g of Ni), the yield of hexane-2 decreases.<br>The results of chromatographic analysis indicate a high activity of modified skeletal nickel catalysts in the<br>reaction of migration of -C = C- bonds during hydrogenation of hexene-1. Modification of Fe, Pd, Sn and Ag<br>increases the migration coefficient (Kmigr) from 0.66 to 0.70-0.77, while additions of Ti, Mo, Ti-Mo and Zr<br>practically do not change it.<br>The activity of the catalyst increases with the introduction of the metals Cu, Zn, Pb, Ti-Mo, Mo, Bi, Ag, and<br>Mo-Cu (W=120-290 cm3<br>/minꞏg Ni) into the initial alloy, while the addition of Fe, Pd and Mn (W=56-80 cm3<br>/minꞏg Ni),<br>while the influence of the components Ti, Zr and Sn is insignificant (W=115-117 cm3<br>/minꞏg Ni)</p> ER -