D. Zapater, S.R. Kulkarni, F. Wery, M. Cui, J. Herguido, M. Menendez, G.J. Heynderickx, K.M. Van Geem, J. Gascon and P. Castaño. Progress in Energy and Combustion Science (2024). Multifunctional fluidized bed reactors for process intensification