Identification of Coke Precursors in Heptane Reforming with a Multioutlet Fixed-Bed Reactor and a Novel Vibrational Microbalance

Adsorption and desorption kinetics of hydrocarbons in FCC catalysts studied using a tapered element oscillating microbalance (TEOM). Part 1: experimental measurements

“…It has thus been used to measure equilibrium adsorption isotherms (Zhu et al, 1998(Zhu et al, , 2001aGiaya and Thompson, 2002), mass changes during reduction treatment (Rekoske and Barteau, 1997), the kinetics of coking (Liu et al, 1997a;Petkovic and Larsen, 1999;Chen et al, 2000), and the in uence of coke on catalyst activity and selectivity (Chen et al, 1996a(Chen et al, , 1999aLiu et al, 1997b;Petkovic and Larsen, 2000;van Donk et al, 2002). There have also been attempts to use TEOM results to consider the combined e ects of adsorption, diffusion, reaction and coking (Chen et al, 1999b;van Donk et al, 2001).…”

On a Simple Nonisothermal Adsorption Experiment with Organic Vapors and an Inertial Microbalance To Study the Surface Properties of Hybrid (Organic/Inorganic) Porous Materials

“…The oscillating balance reactor (OBR) was conceived for quantification of dust in gases in the absence of gravity (16) and was later adapted for in situ catalysis research (17)(18)(19)(20)(21). The commercial apparatus from R&P is based on a sample cell that is made to oscillate electronically at its natural frequency, to detect minute mass changes with the aid of a computer (19,20).…”

Toward enhanced hydrogen production in a catalytic naphtha reforming process

“…A number of studies concerning catalyst deactivation highlighted that the rates of coke formation depend on both hydrogen and hydrocarbon concentrations, on the amount of coke deposits on the catalyst, and on the operating temperature [16,17,48e50]. Hydrogen concentration affects coke formation by influencing the formation of polyunsaturated coking intermediates [6,50]. Higher hydrogen concentrations limit the average coke intermediate concentrations.…”