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研制了一种新型铑钌双金属加氢催化剂（BMSC）用于NBR不饱和双键的加氢，具有高活性、良好的选择性和较低的成本。通过与单金属催化剂RhCl(PPh_3)_3及RuCl_2(PPh_3)_3对NBR加氢活性及加氢速率对比，表明BMSC的加氢活性与RhCl(PPh_3)_3的相当且无凝胶生成，其相对加氢速率从大到小为RhCl(PPh_3)_3，BMSC，RuCl_2(PPh_3)_3。Raman光谱分析表明这是一种新型络合加氢催化剂，它不同于RhCl(PPh_3)_3和RuCl_2(PPh_3)_3催化剂的混合物。通过红外光谱对加氢前后的NBR进行了表征，得到加氢前后—CN的特征峰(2 247 cm~(－1)处)无变化,同时在3 400～3 500 cm~(－1)和3 310～3 450 cm~(－1)处未发现—NH_2和仲胺的特征峰,说明—CN没有被还原。因而这是一种高活性、高选择性的NBR加氢催化剂，其加氢度可达98％以上而无凝胶生成。
A novel rhodium ruthenium bimetallic hydrogenation catalyst (BMSC) was developed for the hydrogenation of NBR unsaturated double bonds with high activity, good selectivity and low cost. The hydrogenation activity and hydrogenation rate of NBR with single metal catalysts RhCl (PPh_3) _3 and RuCl_2 (PPh_3) _3 show that the hydrogenation activity of BMSC is comparable to that of RhCl (PPh_3) _3 without gel formation. The hydrogen rate from large to small RhCl (PPh_3) _3, BMSC, RuCl_2 (PPh_3) _3. Raman spectroscopic analysis showed that this is a new complex hydrogenation catalyst, which is different from the mixture of RhCl (PPh 3) 3 and RuCl 2 (PPh 3) 3 catalysts. The characteristics of NBR before and after hydrogenation were characterized by infrared spectroscopy. The characteristic peaks of -CN before and after hydrogenation (2 247 cm -1) showed no change, while at 3 400-3 500 cm -1 and The characteristic peaks of -NH 2 and secondary amines were not observed at 310-3 450 cm -1, indicating that -CN was not reduced. Therefore, this is a highly active, highly selective NBR hydrogenation catalyst, the degree of hydrogenation up to 98% without gel formation.