工业催化
工業催化
공업최화
INDUSTRIAL CATALYSIS
2015年
7期
567-569
,共3页
精细化学工程%丁腈橡胶%三苯基膦氯化钌%丁酮%催化加氢%氢化丁腈橡胶
精細化學工程%丁腈橡膠%三苯基膦氯化釕%丁酮%催化加氫%氫化丁腈橡膠
정세화학공정%정정상효%삼분기련록화조%정동%최화가경%경화정정상효
fine chemical engineering%nitrile butadiene rubber%Ru( PPh3 )3 Cl2%butanone%catalytic hydrogenation%hydrogenated nitrile rubber
氢化丁腈橡胶具有良好的耐油性和耐氧性,广泛应用于汽车和石油行业,通过丁腈橡胶溶液均相催化加氢制得,采用铑类和钯类均相催化剂。考察不同溶剂、催化剂及m( Ru ):m(丁腈橡胶)对丁腈橡胶加氢的影响。采用红外光谱法和核磁法对氢化丁腈橡胶的结构进行分析,筛选出价廉、活性高和选择性高的催化剂。结果表明,在丁腈橡胶加氢反应中,丁酮可作为溶剂, Ru( PPh3)3 Cl2催化剂具有高活性和高选择性。在丁酮200 mL、丁腈橡胶5 g、Ru( PPh3)3 Cl2催化剂、m(Ru):m(丁腈橡胶)=0.00020:1、反应温度140℃、氢压8.0 MPa和反应时间4 h条件下,加氢度和选择性均达到100%,具有与Rh( PPh3)3 Cl相当的催化性能。
氫化丁腈橡膠具有良好的耐油性和耐氧性,廣汎應用于汽車和石油行業,通過丁腈橡膠溶液均相催化加氫製得,採用銠類和鈀類均相催化劑。攷察不同溶劑、催化劑及m( Ru ):m(丁腈橡膠)對丁腈橡膠加氫的影響。採用紅外光譜法和覈磁法對氫化丁腈橡膠的結構進行分析,篩選齣價廉、活性高和選擇性高的催化劑。結果錶明,在丁腈橡膠加氫反應中,丁酮可作為溶劑, Ru( PPh3)3 Cl2催化劑具有高活性和高選擇性。在丁酮200 mL、丁腈橡膠5 g、Ru( PPh3)3 Cl2催化劑、m(Ru):m(丁腈橡膠)=0.00020:1、反應溫度140℃、氫壓8.0 MPa和反應時間4 h條件下,加氫度和選擇性均達到100%,具有與Rh( PPh3)3 Cl相噹的催化性能。
경화정정상효구유량호적내유성화내양성,엄범응용우기차화석유행업,통과정정상효용액균상최화가경제득,채용로류화파류균상최화제。고찰불동용제、최화제급m( Ru ):m(정정상효)대정정상효가경적영향。채용홍외광보법화핵자법대경화정정상효적결구진행분석,사선출개렴、활성고화선택성고적최화제。결과표명,재정정상효가경반응중,정동가작위용제, Ru( PPh3)3 Cl2최화제구유고활성화고선택성。재정동200 mL、정정상효5 g、Ru( PPh3)3 Cl2최화제、m(Ru):m(정정상효)=0.00020:1、반응온도140℃、경압8.0 MPa화반응시간4 h조건하,가경도화선택성균체도100%,구유여Rh( PPh3)3 Cl상당적최화성능。
Hydrogenated nitrile rubber has been widely used in the automobile an d oil industries because of its good oil and oxygen resistance. Hydrogenated nitrile rubber was prepared by selective hydrogenation of nitrile butadiene rubber in the presence of Rh or Pd catalysts. The effects of various parameters such as reaction solvents,different catalysts and m( Ru):m( nitrile butadiene rubber)on the hydrogenation of nitrile butadiene rubber were investigated. The structure of hydrogenated nitrile rubber was characterized by IR and 1 H-NMR spectra. The catalyst with high activity,good selectivity and cheap price was selected. The results showed that butanone was a good solvent and Ru( PPh3 )3 Cl2 catalyst had high activity and selectivity for the hydrogenation of nitrile butadiene rubber. Under the condition of butanone amount 200 mL,nitrile butadiene rubber amount 5 g,Ru( PPh3 )3 Cl2 as the catalyst,m( Ru):m( nitrile butadiene rubber)=0. 000 20:1,reaction temperature 140 ℃,hydrogen pressure 8. 0 MPa and reaction time 4 h, the hydrogenation degree and the selectivity both reached 100%. Ru( PPh3 )3 Cl2 catalyst possessed the same catalytic performance as Rh( PPh3 )3 Cl catalyst.