Ho Sik Chang

Title: Ho Sik Chang: Innovator in Chemical Engineering

Introduction

Ho Sik Chang is a prominent inventor based in Daejeon, South Korea. He has made significant contributions to the field of chemical engineering, particularly in the development of methods for producing valuable chemical compounds. With a total of seven patents to his name, Chang's work has had a notable impact on the petrochemical industry.

Latest Patents

One of Chang's latest patents is a method for preparing methyl methacrylate (MMA) using isobutene, which includes saturated hydrocarbons. This innovative method involves a catalytic distillation process that separates isobutene from a stream of hydrocarbons containing butadiene and n-butene. The process further includes producing methacrolein through oxidation, followed by the production of methacrylic acid and its esterification with methanol. This method is economically feasible due to its high heat capacity, which minimizes nitrogen addition and reduces reactor size and gas production.

Another significant patent involves the preparation of a magnesia-zirconia composite carrier for catalyzing the oxidative dehydration of normal-butane. This method utilizes a sol-gel process to create a complex carrier that supports a magnesium orthovanadate catalyst. This catalyst is then used to produce normal-butene and 1,3-butadiene, showcasing Chang's expertise in catalyst development and application.

Career Highlights

Throughout his career, Ho Sik Chang has worked with notable companies in the petrochemical sector, including Hanwha Total Petrochemical Co., Ltd. and Samsung Total Petrochemicals Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to advancements in chemical processes.

Collaborations

Chang has collaborated with esteemed colleagues such as Jin Suk Lee and Yeon Shick Yoo. These partnerships have fostered innovation and have been instrumental in the development of his patented methods.

Conclusion

Ho Sik Chang is a distinguished inventor whose work in chemical engineering has led to significant advancements in the production of essential chemical compounds. His innovative methods and collaborations continue to influence the petrochemical industry positively.