BCC	Body centered cubic
$d_{pore}$	Pore diameter
Ea	Activation energy
$f_i^o$	Fugacity for i-component
FCC	Face centered cubic
FFA	Free fatty acid
G	Free Gibbs energy
GOSR	Glycerol oxidative steam reforming
GSR	Glycerol steam reforming
$J_{H_2}$	Hydrogen flux through the membrane
K	Equilibrium constant
ki	Kinetic constant for i-reaction
LTA	Linde-type 5A zeolite
MONG	Matter organic non-glycerol
MR	Membrane reactor
MW	Molecular weight
OGMR	Oxygen glycerol molar ratio
P	Pressure
pH2,ret	Hydrogen partial pressure in the retentate side
pH2,perm	Hydrogen partial pressure in the permeate side
$P{e}_{{\mathrm{H}}_2}$	Hydrogen permeability through the membrane
$P{e}_{{\mathrm{H}}_2}^o$	Pre-exponential factor
R	Universal ideal gas constant
S	Entropy
SRM	Steam reforming of methane
T	Temperature
TR	Traditional reactor
WGS	Water gas shift
WGMR	Water glycerol molar ratio
WHSV	Weight hourly space velocity
δ	Palladium thickness
ε	Membrane void fraction
τ	Tortuosity
∇p	Pressure gradient
η	Viscosity
${\nu }_i$	Stoichiometric coefficient for i-component