Zapater, D. Kulkarni, S.R. Wery, F. Cui, M. Herguido, J. Menendez, M. Heynderickx, G.J. Van Geem, K.M. Gascon, J. Castaño, P. Multifunctional fluidized bed reactors for process intensification Pror. energy combust. sci. 10.1016/j.pecs.2024.101176 2024 2024