TiO2柱撑海泡石负载Ni2P的噻吩加氢脱硫性能

以氢氧化镍为镍源，亚磷酸为磷源，TiO2柱撑海泡石（Ti-Sep）为载体，采用浸渍法制备了含磷化镍前驱体的样品，然后采用程序升温还原法制备了Ni质量分数（w）为5％-25％的Ni2P/Ti-Sep催化剂，并考察了其噻吩加氢脱硫性能．采用X射线衍射（XRD）、N2吸附-脱附、热重分析（TGA）、透射电子显微镜（TEM）和傅里叶变换红外（FTIR）光谱对催化剂样品进行了表征．结果表明，海泡石经TiO2柱撑之后层间距增大，比表面积和孔容都明显变大，热稳定性增强，活性组分Ni2P能很好地分散在海泡石层间及表面，并且没有破坏海泡石的层状结构．上述原因导致Ni2P／Ti-Sep催化剂的噻吩加氢脱硫活性明显...

Full description

Saved in:
Bibliographic Details
Published in物理化学学报 Vol. 28; no. 12; pp. 2924 - 2930
Main Author 廖辉 徐香兰 谌伟庆 石秋杰 刘文明 王翔
Format Journal Article
LanguageChinese
Published 南昌大学化学系,南昌330031%南昌大学应用化学研究所,南昌330031 2012
Subjects
Ni2P
TiO2
加氢脱硫
噻吩
柱撑海泡石
柱撑海泡石
加氢脱硫
噻吩
Ni2P
TiO2
Online AccessGet full text

Cover

More Information
Summary:以氢氧化镍为镍源，亚磷酸为磷源，TiO2柱撑海泡石（Ti-Sep）为载体，采用浸渍法制备了含磷化镍前驱体的样品，然后采用程序升温还原法制备了Ni质量分数（w）为5％-25％的Ni2P/Ti-Sep催化剂，并考察了其噻吩加氢脱硫性能．采用X射线衍射（XRD）、N2吸附-脱附、热重分析（TGA）、透射电子显微镜（TEM）和傅里叶变换红外（FTIR）光谱对催化剂样品进行了表征．结果表明，海泡石经TiO2柱撑之后层间距增大，比表面积和孔容都明显变大，热稳定性增强，活性组分Ni2P能很好地分散在海泡石层间及表面，并且没有破坏海泡石的层状结构．上述原因导致Ni2P／Ti-Sep催化剂的噻吩加氢脱硫活性明显优于Ni2P／Na-Sep（NaCl改性海泡石）和NizP／HClSep（HCl改性海泡石）催化剂．当Ni负载量为15％（w）时，Ni2P/Ti-Sep催化剂具有最好的噻吩加氢脱硫性能：在反应温度为400℃时。噻吩转化率达100％．
Bibliography:11-1892/06
Ni2P; TiO2; Pillared sepiolite; Thiophene; Hydrodesulfurization
Samples containing a nickel phosphide precursor were synthesized by the impregnation method using TiO2-pillared sepiolite （Ti-Sep） as a support, nickel hydroxide as a nickel source, and phosphorous acid as a phosphorus source. From these precursor samples, Ni2P/Ti-Sep catalysts with Ni content ranging from 5%-25% （w, mass fraction） were prepared by temperature-programmed reduction. Thiophene hydrodesulfurization （HDS） was used to investigate the HDS activity of the catalysts. The catalysts were characterized by X-ray powder diffraction （XRD）, N2 adsorption-desorption, thermal gravity analysis （TGA）, transmission electron microscope （TEM）, and Fourier transform infrared spectroscopy （FTIR）. The results demonstrated that the specific surface area and pore volume of Ti-Sep were enlarged and catalyst thermal stability was improved. In addition, the layer spacing of sepiolite was also increased. As a consequence, the active component, Ni2P, c
ISSN:1000-6818
DOI:10.3866/PKU.WHXB201209281