【摘要】 以二正丁胺为模板剂合成的SAPO-41分子筛为酸性载体,用程序升温还原法制备不同担载量的x Ni₂P/SAPO-41（x为Ni₂P的质量百分含量）系列双功能催化剂,并作为对比制备了3Ni/SAPO-41催化剂。分别采用X射线衍射（XRD）、N₂物理吸附、透射电镜（TEM）、吡啶吸附的红外光谱（Py-IR）和H₂-化学吸附等方法对催化剂的物理化学性能进行了表征,并采用固定床反应器对其催化正十六烷加氢异构化反应性能进行了评价。结果表明,与3Ni/SAPO-41催化剂相比,x Ni₂P/SAPO-41系列双功能催化剂表现出更高的催化活性和异十六烷的选择性,其中3Ni₂P/SAPO-41的催化性能最佳,在正十六烷转化率为80.7%时,异十六烷的选择性和收率分别高达82.5%和66.6%。更多还原

【Abstract】 The SAPO-41 molecular sieve as acidic supports is synthesized with the di-n-butylamine（DBA）as template,and a series of bifunctional catalysts xNi₂P/SAPO-41（x is the mass percentage of Ni₂P）with different Ni₂P loadings are prepared by temperature programmed reduction method.A 3Ni/SAPO-41 catalyst is prepared as a comparison.The physicochemical properties of the catalysts are characterized by X-ray diffraction（XRD）,N₂physical adsorption,transmission electron microscopy（TEM）,IR spectroscopy of adsorbed pyridine（Py-IR）and H₂-chemical adsorption methods.The catalytic performance in the hydroisomerization of n-hexadecane is evaluated in a fixed bed reactor.The results show that the xNi₂P/SAPO-41 series of bifunctional catalysts exhibits a higher catalytic activity and selectivity for iso-hexadecane than the 3Ni/SAPO-41 catalyst,among which the 3Ni₂P/SAPO-41 displays the best catalytic performance,when the conversion of n-hexadecane is 80.7%,the selectivity and the yield of iso-hexadecane can reach 82.5%and 66.6%respectively.更多还原