Synthesis and characterization of several Ni/NiAl2O4 catalysts active for the 1,2,4-trichlorobenzene hydrodechlorination
Synthesis and characterization of several Ni/NiAl2O4 catalysts active for the 1,2,4-trichlorobenzene hydrodechlorination
复制标题
DOI：
10.1016/s0926-3373(99)00133-2
复制
发表时间：
2000-03-20
影响因子：
22.1
通讯作者：
Sueiras, JE
中科院分区：
文献类型：
--
作者：
Cesteros, Y;Salagre, P;Sueiras, JE
以镍尖晶石为载体制备了1，2，4-三氯苯气相加氢脱氯镍催化剂。采用X射线衍射（XRD）、BET、程序升温还原（TPR）、扫描电镜（SEM）和程序升温脱附（TPD）等技术对样品进行了结构表征。Ni/NiAl 2 O 4催化剂具有较高的苯转化率和选择性。这是由于它们的还原度（XRD）和结构表面性质（BET面积、SEM、TPD）。最具活性和选择性的催化剂在523 K时苯产率为87%，转化率为82%。这些Ni/尖晶石催化剂在较低温度下解吸大量的氢（
Nickel spinels were synthesized in order to be used as supports of nickel catalysts for the hydrodechlorination of 1,2,4-trichlorobenzene in the gas phase. All the samples were structurally characterized using X-ray diffraction (XRD), BET, temperature-programmed reduction (TPR), scanning electron microscopy (SEM) and temperature-programmed desorption (TPD) techniques. The Ni/NiAl2O4 catalysts tested had high conversions and selectivities towards benzene. This is due to their reduction degree (XRD) and structural surface properties (BET area, SEM, TPD). The most active and selective catalyst yields 87% benzene at 523 K for a conversion of 82%. These Ni/spinel catalysts desorb large amounts of hydrogen at lower temperatures (