Hydroisomerization of <i>n</i>-hexadecane on Pt-containing silicone aluminum phosphate molecular sieves SAPO-11 with different silicon content

Abstract

Objectives. To obtain silicone aluminum phosphate molecular sieves SAPO-11 with different silicon content, to determine their pore space and acidic properties, to apply 0.5 wt % to their surface Pt, and to evaluate the effectiveness of the use of n-hexadecane in the hydroisomerization reaction.Methods. The chemical composition of the SAPO-11 molecular sieves obtained was determined by means of X-ray fluorescence spectroscopy using a Shimadzu EDX-7000P device. The radiographs of non-calcined SAPO-11 were recorded on a Shimadzu XRD-7000 diffractometer in CuKα radiation.Results. Silicone aluminum phosphate molecular sieves SAPO-11 containing 0.5 wt % Pt on the surface were obtained from gels. As the SiO2/Al2O3 ratio increases, the number of acid centers increases. This then leads to an increase in the conversion of n-hexadecane. The selectivity of the formation of hydrocarbons of the structure decreases at the same time.Conclusions. Silicone aluminum phosphate molecular sieves Pt-SAPO-11 were obtained. It was also found that the samples undergo n-hexadecane conversion.

Keywords

• molecular sieves
• silicone aluminum phosphate sapo-11
• catalysts for hydroisomerization of n-hexadecane