In this work,the synthesis of acrolein dimethyl acetal and ammonia toward pyridine and 3-picoline is conducted in a fixed-bed reactor.Various influencing parameters,including carbon resources,types of catalysts,reaction temperature,liquid hourly space velocity and reactant ratios,are investigated in details.The results show that the reaction using (acrolein dimethyl acetal)/ammonia is well operated,as compared to acrolein/ammonia.The reaction conditions have great affect on the total yield of pyridine and 3-picoline.The optimal conditions are...