NOVELTY - Chemical process accelerator system comprises viscid fluid Taylor vortex flows (TVF) (50a); and catalyst (92') supported in laminar circular Couette flows (CCF) generated by the TVF.    USE - Chemical process accelerator system for use in chemical reactors, such as fuel reformer used to extract hydrogen (H2) from hydrocarbon fuels, such as methane or methanol, and other chemicals that are high in hydrogen content, such as sodium borohydride, and fuel cell.    ADVANTAGE - The system reduces surface-limiting and transport-limiting characteristics of the catalysts; generates high-shear-rate laminar CCF at catalyst surfaces; brings reactant chemicals to catalyst particle surfaces in high-shear-rate laminar flows having dimensions of 2-5 nm, exchanges intermediate reactants, and then carries away ions, intermediate reaction products, fluids (e.g. water), or solids (e.g. carbon) that could reduce reaction rates or poison the catalyst particle surfaces with little delay; and brings reactant chemicals to catalyst surfaces capable of operating at elevated temperatures that achieve enhanced reaction rates with inexpensive catalysts. The catalysts, TVF, and CCF rapidly remove intermediate products from catalyst surfaces to increase reaction rates in chemical reactors; and promote chemical reactions that do not create undesirable intermediate products. In contrast to the prior art, the chemical process accelerator system avoids turbulence and preserves laminar flow in the catalyzed reaction zone to be effective as a mass transport mechanism conveying reactants to and from actual catalytic surfaces. The system realizes bidirectional mass transport of components to and from catalyst surface layers by cross-flow of reactants (e.g. fuel and oxidizer) directly through catalyst structures wetted by TVF-induced high-shear-rate laminar flows; control of the residence time of reactants at catalyst surfaces to permit very complete reactions; increased catalyst loading factor and useful catalyzed reaction zone thickness to permit higher area current densities; layered catalyst compositions and morphologies in coordination with crossflow fuel/oxidizer transport best suited to the specific intermediate reaction occurring in the zone; operation of catalysts at higher temperatures, gas pressures, and fuel concentrations without significant crossover due to more complete fuel/oxidizer utilization than would be possible with proton exchange membrane and other crossover barriers; use of potentially less-expensive active catalyst; and selection from a wider range of acidic or alkaline fluids capable of sustaining TVF.    DESCRIPTION OF DRAWING(S) - The drawing is a perspective view of a chemical reactor, such as fuel reformer.    TVF (50a)    Center of fuel chamber (54')    Catalyst (92')    Fuel chamber (94')    Second cylinder-like surface layer (97')