Qian Su

Title: Qian Su and a Process for Co-Producing Dimethyl Carbonate and Ethylene Glycol.

Introduction

Qian Su is an inventor based in Beijing, China, and is associated with the Chinese Academy of Sciences. Her work includes a patented process for producing dimethyl carbonate and ethylene glycol together.

Latest Patents

Su is credited with 1 patent, titled “System and Process for Co-Producing Dimethyl Carbonate and Ethylene Glycol.” The invention describes an integrated system with an ethylene carbonate preparation unit and an ethylene carbonate alcoholysis unit. A fixed-bed reactor containing a supported ionic liquid catalyst reacts carbon dioxide with ethylene oxide to produce ethylene carbonate. After purification, the ethylene carbonate is combined with an alcoholysis catalyst and reacted with methanol in a reactive distillation tower, yielding dimethyl carbonate and ethylene glycol.

The process is designed to increase ethylene oxide conversion and avoid separating conventional homogeneous catalysts from ethylene carbonate. These features can simplify processing and reduce energy consumption.

Career Highlights

Su’s patent reflects work on integrated chemical production systems and catalytic processes. The disclosed approach connects ethylene carbonate preparation with its subsequent conversion, combining multiple stages in a coordinated process.

Collaborations

The patent lists Weiguo Cheng and Junping Zhang among Su’s coworkers. The invention’s described system brings together reactor design, catalyst use, and reactive distillation.

Conclusion

Qian Su’s patented process presents an integrated route for co-producing dimethyl carbonate and ethylene glycol, with the stated aims of improving conversion, simplifying operations, and reducing energy use.