Fabrication of flow reactor modules and modules produced

A process for forming a silicon carbide fluidic module for a flow reactor, the process comprising:

• positioning a positive fluid passage mold of a passage having a tortuous shape within a volume of powder-coated silicon carbide powder;
• pressing the volume of silicon carbide powder with the mold inside to form a pressed body;
• heating the pressed body to remove the mold;
• and
• sintering the pressed body to form a monolithic silicon carbide fluidic module having a tortuous fluid passage extending therethrough, the tortuous fluid passage having an interior surface that is free from any joints along the interior surface,
• wherein the interior surface has a surface roughness of less than 10 μm Ra.