Mohamed Khalil is a Senior Technical Service Engineer with Topsoe North America. He holds a BSc degree in chemical engineering from The University of Houston (U.S.). The author can be reached at ...

Ryan Jesina is a Senior Technical Service Engineer with Topsoe North America with 9 yr of refinery experience. He holds a BSc degree in chemical engineering from Louisiana State University (U.S.). The ...

Xavier E. Ruiz Maldonado is a Technical Service Manager with Topsoe North America with more than 18 yr of experience in hydrotreating and hydrocracking. He holds an MSc degree in chemical engineering ...