John F Freeman

Title: The Innovations of John F Freeman

Introduction

John F Freeman is a notable inventor based in Webster Groves, MO (US). He has made significant contributions to the field of chemical engineering, particularly in the preparation of phosphorus trichloride. His innovative approach has led to advancements in the efficiency and control of chemical reactions.

Latest Patents

Freeman holds a patent for an "Apparatus for preparing phosphorus trichloride." This patent describes an improved process where elemental phosphorus reacts with chlorine. The key improvement involves continuous, high-speed analysis of the reactor's contents, allowing for better control of the reaction. This method minimizes the production of undesirable by-products such as phosphorus pentachloride. The analysis is conducted using a laser Raman spectrometer linked to an optrode with a remotely located probe head and a circulating sampling system. This setup ensures that fresh samples are continuously provided to the probe head. Additionally, the apparatus allows for automatic control of the reaction by adjusting the reactant feed based on the real-time analysis of the reactor contents.

Career Highlights

Freeman has had a distinguished career at Monsanto Company, where he has applied his expertise in chemical processes. His work has not only contributed to the company's innovations but has also advanced the field of chemical engineering.

Collaborations

Throughout his career, Freeman has collaborated with esteemed colleagues such as Macaulay S Feld and David O Fisher. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

John F Freeman's contributions to the field of chemical engineering, particularly through his patent for preparing phosphorus trichloride, highlight his innovative spirit and dedication to advancing technology. His work continues to influence the industry and exemplifies the importance of continuous improvement in chemical processes.