Mass and heat transfer at spiral tube internal used as a heat exchanger and catalyst support in a continuous bubble column reactor. - El-Naggar, Mohamed A.; Abdel-Gawad, Esraa H.; Saleh, Ibrahim H.; Sedahmed, Gomaa H.; Attar, Alaa; Abdel-Aziz, Mohamed Helmy; El-Ashtoukhy, El-Sayed Z.; Almutlaq, Nasser; Fathalla, Ahmed S. (Experimental Heat Transfer, 2026)