Table 7. Ni/Metal Oxide Supported Catalysts Reported in the Literature for the Pyrolysis and In-line Steam Reforming of Biomass and Plastic Wastes.

Catalyst	Feed	Preparation methoda	Reactor configuration	Operating conditionsb	H2 conc. (vol %)	H2 prod. (wt %)	Ref.
20Ni/SiO2	wood pellets	iwi	screw-kiln/fixed (4 g min–1)	TP = 500 °C	38.7	2.0	Efika et al.102
				TR = 760 °C
20Ni/SiO2	wood pellets	sg	screw-kiln/fixed (4 g min–1)	TP = 500 °C	37.6	2.0	Efika et al.102
				TR = 760 °C
10Ni/SiO2	pine wood sawdust	wi	spouted/fluidized (0.75 g min–1)	TP = 500 °C	55.7	1.6	Santamaria et al.51,100
				TR = 600 °C
				S/C = 7.7
12Ni/MgO	cedar wood	iwi	dual fixed bed (0.06 g min–1)	T = 550–650 °C	32.4	2.3	Miyazawa et al.89
				S/C = 0.5
6Ni/MgO	cotton stalk	commercial	bubbling fluidized/entrained flow/fixed (3.3 g min–1)	TP = 600 °C	38.0	6.5	Chen et al.170
				TG = 800 °C
				TR = 850 °C
				S/B = 1–4
6Ni/MgO	timber wood sawdust	commercial	bubbling fluidized/entrained flow/fixed	TP = 600 °C	51.0	7.6	Ma et al.169
				TG = 700–850 °C
				TR = 700–850 °C
				S/B = 3
10Ni/MgO	pine wood sawdust	wi	spouted/fluidized (0.75 g min–1)	TP = 500 °C	61.6	9.1	Santamaria et al.51,100
				TR = 600 °C
				S/C = 7.7
12Ni/TiO2	cedar wood	iwi	dual fixed bed (0.06 g min–1)	T = 550–650 °C	57.4	8.2	Miyazawa et al.89
				S/C = 0.5
10Ni/TiO2	pine wood sawdust	wi	spouted/fluidized (0.75 g min–1)	TP = 500 °C	57.9	7.2	Santamaria et al.51,100
				TR = 600 °C
				S/C = 7.7
12Ni/ZrO2	cedar wood	iwi	dual fixed bed (0.06 g min–1)	T = 550–650 °C	52.7	6.6	Miyazawa et al.89
				S/C = 0.5
10Ni/ZrO2	pine wood sawdust	wi	spouted/fluidized (0.75 g min–1)	TP = 500 °C	65.4	10.7	Santamaria et al.40,51,100
				TR = 600 °C
				S/C = 7.7
12Ni/CeO2	cedar wood	iwi	dual fixed bed (0.06 g min–1)	T = 550–650 °C	51.9	5.9	Miyazawa et al.89
				S/C = 0.5
10Ni/MgO	PP	wi	fixed/fixed (1 g)	TP = 500 °C	32.6	3.0	Wu and Williams164
				TR = 800 °C
				steam = 4.74 g h–1
10Ni/MgO	LDPE	wi	fixed/fixed (2 g)	TP = 500 °C	48.8	7.4	Huang et al.171
				TR = 800 °C
				S/P = 2
10Ni/CeO2	PP	wi	fixed/fixed (1 g)	TP = 500 °C	75.5	11.6	Wu and Williams164
				TR = 800 °C
				steam = 4.74 g h–1
10Ni/CeO2	LDPE	wi	fixed/fixed (2 g)	TP = 500 °C	57.2	12.2	Huang et al.171
				TR = 800 °C
				S/P = 2
20Ni/ZrO2	PS	cp	fixed/fixed (0.3 g)	TP = 500 °C	58.0	10.0	Zhou et al.172
				TR = 500 °C
				steam = 0.02 mL min1
10Ni/Y2O3	LDPE	wi	fixed/fixed (2 g)	TP = 500 °C	53.1	9.8	Huang et al.171
				TR = 800 °C
				S/P = 2

^aiwi, Incipient wetness impregnation; wi, wet impregnation; cp, co-precipitation; sg, sol–gel.

^bT_P = Pyrolysis temperature; T_R = reforming temperature; T_G = gasification temperature.