A Novel Synthesis Route for Highly Ordered MCM-41 Assembled from Y Zeolite Seed Colloidal and its Performance as the Support for the Catalyst
A novel synthesis route for a MCM-41 structure with Y zeolite seeds colloidal has been developed. The route is different from conversational method of highly ordered MCM-41 assembled from Y zeolite seed colloidal. The material was characterized by various techniques. The results indicate that the material has well-ordered hexagonal structure, with a thicker wall than that of the sample synthesized by a direct hydrothermal route (N-MCM-41). SEM images show a very uniform net-like morphology, which is different from the loose appearance of N-MCM-41. Furthermore, it has a stronger acid strength and a higher hydrothermal stability. The sample was used as the support of a Pd-Pt catalyst for the polyaromatics hydrogenation. It was demonstrated that the introduction of building units of Y zeolite enhances the activity of polyaromatics hydrogenation. It can be concluded that the pore structure and acidity of support is a key factor for the design of a sulfur tolerant noble metal catalyst for aromatics saturation of diesel.
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
H. J. Zhang et al., "A Novel Synthesis Route for Highly Ordered MCM-41 Assembled from Y Zeolite Seed Colloidal and its Performance as the Support for the Catalyst", Advanced Materials Research, Vols. 239-242, pp. 2926-2931, 2011