-A pilot plant study on propane catalytic combustion in a membrane reactor with separate reactant feeds is presented. The membrane consisted of a porous alumina tube activated by insertion into its pores of a Pt/7-A1203 catalyst. The role of reactants concentration and of the feed flow rates were studied in the transport-controlled operating regime, where a number of interesting properties of t...

Inefficient use of raw materials in most catalytic processes can be attributed mainly to the deactivation of the catalyst in chemical reactors. In order to achieve efficient use of raw materials, this paper addresses mitigation of deactivation through optimization of inlet temperature-time trajectories. The optimization of temperature profiles in reactors is one of the key problems in the synth...

Catalytic reforming is a chemical process utilized in petroleum refineries to convert naphtha, typically having low octane ratings, into high octane liquid products, called reformates, which are components of high octane gasoline. In this study, a mathematical model was developed for simulation of semi-regenerative catalytic reforming unit and the result of the proposed model was compared with ...

Novel Catalytic Non-Thermal Plasma Reactor for the Destruction of Volatile Organic Compounds L. Kiwi-Minsker, Ch. Subrahmanyam and A. Renken Ecole Polytechnique Fédérale de Lausanne (GGRC-EPFL), CH-1015 Lausanne, Switzerland, Fax: +41-21693 31 90, [email protected] Summary A novel dielectric barrier discharge (DBD) reactor has been designed and tested for the abatement of diluted vol...

A membrane reactor is a reaction system that provides higher productivity and lower separation cost in chemical reaction processes. In this paper, packed bed catalytic membrane reactor with palladium membrane for methane steam reforming was analyzed both experimentally and numerically. The numerical model consists of a full set of partial differential equations derived from conservation of mass...

A novel dielectric barrier discharge (DBD) reactor has been designed as catalytic non-thermal plasma (NTP) reactor. It was tested for the abatement of diluted volatile organic compounds (VOCs) of different nature. The novelty of the DBD reactor is that a metallic catalyst made of sintered metal fibers (SMF) also acts as the inner electrode. The SMF electrodes modified with oxides of Ti, Mn and ...

Hydrogen spillover over macroscopic distances was demonstrated and exploited in the design of two novel catalytic reactors for 1-butene isomerization. A dual-bed reactor containing separate zones of noble metal and bimetallic catalysts yielded activities up to 2.7 times greater than that of the noble metal alone. The noble metal catalyst contained palladium supported on graphitic carbon. The bi...

We simulate and analyze the behavior of stationary and moving spatially periodic patterns in a simple cross-#ow reactor with a "rst-order exothermic reactor and realistically high Pe and ̧e. Novel nonTuring stationary patterns emerge due to reactor}di!usion}convection interaction in the simple model that incorporates only concentration and temperature as its variables. We extend our previous an...

Pyrolysis of low density polyethylene (LDPE) by equilibrium fluid catalytic cracking (FCC) was studied in a stirred reactor under different process parameters. In this work, the effect of process parameters such as degradation temperature (420-510°C), catalyst/polymer ratio (0-60%), carrier gas type (H2, N2, ethylene, propylene, Ar and He), residence time and agitator speed (0-300 rpm) on the c...

Methanol decomposition using a catalytic reactor with electric discharges was investigated in the present study. The methanol conversion at 190 °C was 58.0%; however, the methanol conversion increased by 65.9% under the electric discharge. An electric discharge produces high energy electrons with sufficient energy to break a C-OH bond.