What is the temperature range at which the preheated gas flows through the inside of tube, which contains promoted iron catalyst?
A. 450-500 Celsius
B. 500-550 Celsius
C. 550-600 Celsius
D. 400-600 Celsius
Answer:B
What is the temperature range at which the preheated gas flows through the inside of tube, which contains promoted iron catalyst?
A. 450-500 Celsius B. 500-550 Celsius C. 550-600 Celsius D. 400-600 Celsius