This unit consists of one fixed bed reactor for a gas phase hydrogenation reaction. The feed module can deliver three gases and one liquid. The reactor tube is stainless steel and can operate at temperatures up to 600°C at 100 atmospheres. The reactor module uses a three-zone furnace and the flow can be operated in an up-flow or down-flow configuration. The reactor effluent is routed to a gas/liquid separator where analysis can occur. Safety features include a hydrocarbon detector integrated into the computer software prompting error messages, alarms, or automatic shutdown.