Alexander J Marshall

Title: Alexander J Marshall: Innovator in Catalyst Removal Processes

Introduction

Alexander J Marshall is a notable inventor based in Bright's Grove, CA. He has made significant contributions to the field of chemical engineering, particularly in the area of catalyst removal processes. His innovative approach has led to the development of a unique method for removing rhodium-containing catalyst residue from hydrogenated nitrile rubber solutions.

Latest Patents

Marshall holds a patent for a process that effectively removes rhodium-containing catalyst residue from a solution of hydrogenated nitrile rubber. This process utilizes an ion exchange resin that is both macroreticular and modified with specific functional groups such as amine, thiol, carbodithioate, thiourea, and/or dithiocarbamate. The method is capable of extracting rhodium from viscous rubber solutions containing less than 10 ppm rhodium. In a preferred embodiment, the process is conducted in an ion-exchange column, showcasing its efficiency and effectiveness.

Career Highlights

Throughout his career, Alexander J Marshall has been associated with Polysar Limited, where he has applied his expertise in chemical processes. His work has not only advanced the company's capabilities but has also contributed to the broader field of materials science.

Collaborations

Marshall has collaborated with esteemed colleagues such as William G Bradford and Gilles J Arsenault. These partnerships have fostered innovation and have been instrumental in the development of new methodologies in their respective fields.

Conclusion

In summary, Alexander J Marshall is a distinguished inventor whose work in catalyst removal processes has made a significant impact in the industry. His innovative patent and collaborations highlight his commitment to advancing chemical engineering practices.