用化学还原法制备了 Ni-Co-B 非晶态合金催化剂,并采用透射电子显微镜、扫描电子显微镜、选区电子衍射、X射线衍射、X射线能谱和差热-热重分析等表征手段研究了催化剂的非晶性质和原子组成等. 将此催化剂用于邻氯硝基苯和 3,4-二氯硝基苯的液相催化加氢反应,结果表明,当Co/(Co+Ni)=0.5 (摩尔比)时, Ni-Co-B 催化剂具有较好的加氢性能和较高的抑制脱卤性能. 在不加脱卤抑制剂的情况下,两种氯代硝基苯的转化率均接近100%, 脱卤率分别为1.12%和0.42%, 优于使用 Ni-B 和 Co-B 非晶态合金催化剂时的结果. 还讨论了将Co引入到 Ni-B 非晶态合金催化剂时对其性能的影响.
参考文献
[1] | Molnar A;Smith G V;Bartok M .[J].Advances in Catalysis,1989,36:329. |
[2] | Chen Y .[J].Catalysis Today,1998,44(1-4):3. |
[3] | Li H X;Chen X F;Wang M H;Xu Y P .[J].Applied Catalysis A:General,2002,225(1-2):117. |
[4] | Li H;Li H X;Deng J F .[J].Applied Catalysis A:General,2000,193(1-2):9. |
[5] | Li H X;Wu Y D;Wang Y;Zhang J Dai W L Qiao M H .[J].Catalysis Today,2004,93-95:493. |
[6] | Guo H B;Li H X;Xu Y P;Wang M H .[J].Materials Letters,2002,57(02):392. |
[7] | 王文静,严新焕,许丹倩,孙军庆,房永彬,徐振元.Ni-B非晶态合金催化剂用于卤代硝基苯液相加氢制卤代苯胺[J].催化学报,2004(05):369-372. |
[8] | 房永彬,严新焕,孙军庆,徐振元,王文静.碳纳米管负载Pt-Sn-B非晶态催化剂催化氯代硝基苯液相加氢反应的性能[J].催化学报,2005(03):233-237. |
[9] | Deng J F;Li H X;Wang W J .[J].Catalysis Today,1999,51(01):113. |
[10] | 王明辉,李和兴.Ni-B/SiO2非晶态催化剂应用于硝基苯液相加氢制苯胺[J].催化学报,2001(03):287-290. |
[11] | Yadav GD.;Kharkara MR. .LIQUID-PHASE HYDROGENATION OF SATURATED AND UNSATURATED NITRILES - ACTIVITIES AND SELECTIVITIES OF BIMETALLIC NICKEL-COPPER AND NICKEL-IRON CATALYSTS SUPPORTED ON SILICA[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,1995(1):115-123. |
[12] | Boellaard E;Vreeburg R J;Gijzeman O L J;Geus J W .[J].Journal of Molecular Catalysis,1994,92(03):299. |
[13] | Li HX;Wu YD;Zhang J;Dai WL;Quao MH .Liquid phase acetonitrile hydrogenation to ethylamine over a highly active and selective Ni-Co-B amorphous alloy catalyst[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2004(1/2):199-206. |
[14] | Szollosi G;Torok B;Szakonyl G;Kun I Bartok M .[J].Applied Catalysis A:General,1998,172(02):225. |
[15] | 沈百荣,方志刚,范康年,邓景发.Ni-Co-B非晶态合金的结构和催化活性的理论研究[J].化学学报,1999(04):366-371. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%