Abstract
A convection-free flow-type reactor includes a reactor body. The reactor body includes a reaction chamber to house a fluid. An inlet is in communication with the reaction chamber to allow input of a reactant fluid. An outlet is in communication with the reaction chamber to allow output of a product fluid. An energy beam source device provides an energy beam to irradiate the reactant fluid in the reaction chamber. The disclosure further provides a convection-free flow-type synthesis method.