In this work, the gas-liquid two-phase flow patterns and characteristics in Taylor flow regime in monolith channel were simulated by means of volume of fluid (VOF) method taking benzene and propylene as model system. Four types of flow patterns (i.e., bubbly flow, Taylor flow, Taylor-annular flow, and annular flow) were first identified in the range of gas velocity from 0.01 to 3.0 m s(-1) and liquid velocity from 0.01 to 0.05 ms(-1). Then, the effect of contact angle and superficial velocity on hydrodynamic performance was investigated, confirming that the angle 0 degrees is more appropriate. The hydrodynamic performance was intensified in the region of thin liquid film between gas bubble and the wall as well as the interface between gas bubble caps and liquid slug. Finally, the mass transfer performance of two-phase flow in monolith channel was investigated using one Taylor unit cell model. It was found that the mass transfer coefficients for monolith catalyst in Taylor flow regime is at least one order of magnitude higher than those for both structured catalytic packings and traditional pellet catalyst, exhibiting the advantage of monolith catalyst for process intensification. (C) 2016 Elsevier B.V. All rights reserved.