“…Figure 5.4 shows that depending on the membrane operation temperature, different membranes have different applications for H 2 production in coal gasification process (Kaldis, Skodras, & Sakellaropoulos, 2004;Li & Fan, 2008;Smart et al, 2010). The membrane used in this process usually tolerates operation temperatures in the range of 280e600 C. Typical membranes used in this process for H 2 production in coal gasification include microporous zeolite membranes (Wang, Dong, & Lin, 2014; silica membranes (Brunetti, Barbieri, Drioli, Granato, & Lee, 2007Giessler, Jordan, Costa, & Lu, 2003), carbon molecular membranes, and Pd-based membranes (Augustine, Mardilovich, Kazantzis, & Ma, 2012;Koc, Kazantzis, & Ma, 2011;Liguoria et al, 2012). Syngas produced from a coal gasifier is initially removed with particulates and sulfur, and then fed to a membrane reactor for WGS reaction to produce H 2 and CO 2 .…”