Bennett D Marshall, II

Title: Bennett D. Marshall II and Multi-Stage Direct Air Capture

Introduction

Bennett D. Marshall II is an inventor associated with Bethlehem, Pennsylvania, and ExxonMobil Technology and Engineering Company. His patent work addresses methods for capturing carbon dioxide directly from air and concentrating it for potential sequestration or further processing.

Latest Patents

Marshall is credited with 1 patent, titled “Multi-Stage Direct Capture of CO₂ from Air.” The patent describes a process in which an initial sorption stage captures CO₂ from air, then desorbs it into a secondary stream containing roughly 1.0 percent CO₂ or more. One or more additional sorption stages use a different contacting method, potentially improving capture efficiency and producing an output stream with a CO₂ concentration of 80 percent or more, with embodiments reaching 90 or 95 percent or more. The concentrated stream can then be sequestered or used in further processing.

Career Highlights

Marshall’s listed patent reflects work on staged carbon capture, combining an initial capture step with subsequent concentration stages. This approach is designed to turn dilute CO₂ in ambient air into a higher-purity stream suitable for downstream handling.

Collaborations

Marshall’s listed coworker is Aaron W. Peters. The patent is associated with ExxonMobil Technology and Engineering Company.

Conclusion

Bennett D. Marshall II’s patent focuses on a multi-stage approach to direct air capture that concentrates CO₂ for potential sequestration or further use.