Youchang Xie

Title: The Innovative Contributions of Youchang Xie

Introduction

Youchang Xie is a prominent inventor based in Beijing, China. He has made significant contributions to the field of catalyst technology, particularly in the area of vehicular exhaust emission control. With a total of 3 patents to his name, Xie's work has had a substantial impact on environmental sustainability.

Latest Patents

One of Xie's latest patents focuses on a catalyst support designed to control vehicular exhaust emissions. This support comprises a high surface area refractory metal oxide, such as gamma-alumina, which features a monomolecular layer of a second oxide. The second oxide can be selected from titanium dioxide, cerium dioxide, or zirconium dioxide. The monomolecular layer typically has a thickness of less than about 10 angstroms. This innovative support can be converted into a vehicular exhaust emission control catalyst by depositing it on a substrate like cordierite and adding a precious metal component, such as platinum. The catalyst also includes at least one NO storage component, which enhances its performance. Catalysts developed using Xie's support exhibit outstanding thermal stability and resistance to sulfur poisoning.

Another notable patent by Xie involves catalyst selectivation. He discovered that catalysts can be modified by depositing an agent derived from organometallic compounds. This modification enhances the selectivity of catalysts for para-substituted alkyl benzenes, such as para-xylene (PX). By reacting aromatic compounds like toluene and/or benzene with a methylating agent, Xie's selectivated catalysts can achieve a selectivity of 80% or greater, significantly surpassing the equilibrium concentration of 24%.

Career Highlights

Throughout his career, Youchang Xie has worked with esteemed organizations, including Peking University and ExxonMobil Chemical Patents Inc. His research and innovations have contributed to advancements in catalyst technology and environmental protection.

Collaborations

Xie has collaborated with notable colleagues, including Naiyu Bu and Jun Feng Liu. Their combined expertise has furthered the development of innovative solutions in the field of catalysis.

Conclusion

Youchang Xie's contributions to catalyst technology and environmental sustainability are noteworthy. His innovative patents and collaborations have positioned him as a key figure in the field, making a lasting impact on the industry.