Mullite-loaded W-promoted Co-based catalyst for hydrogen production by auto-thermal reforming of acetic acid
An autothermal reforming and catalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, heterogeneous catalyst chemical elements, etc., can solve the problem of easy oxidation and easy sintering of active metals. And other issues
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example 1
[0029] Take by weighing 18.753g aluminum nitrate nonahydrate (Al(NO 3 ) 3 9H 2 (O) and 2.322g tetraethyl orthosilicate (TEOS) were added into 80mL ethanol to obtain a white solution, and 36.701g ammonium carbonate ((NH 4 ) 2 CO 3 ) into the white solution, heated in a water bath at 60°C and vigorously stirred for 5 hours, dried in an oven at 120°C for 64 hours, and then calcined in a muffle furnace at 1200°C for 4 hours to obtain the carrier Mullite; 1.166g cobalt nitrate and 1.314g Dissolve ammonium tungstate in deionized water, stir thoroughly for 3 hours, then add 1.60g Mullite carrier, continue stirring for 2 hours, put it in an oven at 105°C for 16 hours, and then bake it in a tube furnace at 700°C for 4 hours to obtain CWM-V Catalyst, the weight percentage of this catalyst is composed of: cobalt oxide (CoO) is 15.0%, tungsten oxide (WO 3 ) is 5.0%, Mullite (3Al 2 o 3 -2SiO2 2 ) is 80.0%.
[0030] The reactivity evaluation of autothermal reforming of acetic acid ...
Embodiment 1
[0033] Take by weighing 18.753g aluminum nitrate nonahydrate (Al(NO 3 ) 3 9H 2 O) and 2.322g tetraethyl orthosilicate (TEOS) were added into 80mL ethanol to obtain a white solution, and 36.701g ammonium carbonate ((NH 4 ) 2 CO 3 ) into the white solution, heated in a water bath at 60°C and stirred vigorously for 5 hours, dried in an oven at 120°C for 64 hours, and then calcined in a muffle furnace at 1200°C for 4 hours to obtain the carrier Mullite; mix 1.166g of cobalt nitrate and 0.263g of tungsten Dissolve ammonium acid in deionized water, stir thoroughly for 3 hours, then add 1.680g Mullite carrier, continue stirring for 2 hours, put the drug in an oven at 105°C for 16 hours, put the dried drug in a tube furnace at 700°C for 4 hours , the CWM-I catalyst was obtained, and the spinel-containing CoAl supported on Mullite was formed 2 o 4 and composite oxide CoWO 4 The mesoporous composite oxide catalyst with Co-W-Al-O active center, its typical crystal structure is sho...
Embodiment 2
[0036] Take by weighing 18.753g aluminum nitrate nonahydrate (Al(NO 3 ) 3 9H 2 O) and 2.322g tetraethyl orthosilicate (TEOS) were added into 80mL ethanol to obtain a white solution, and 36.701g ammonium carbonate ((NH 4 ) 2 CO 3 ) was added to the above white solution, heated in a water bath at 60°C and vigorously stirred for 5h, dried in an oven at 120°C for 64h, and then calcined in a muffle furnace at 1200°C for 4h to obtain the carrier Mullite; 1.166g of cobalt nitrate and 0.536g Dissolve ammonium tungstate in deionized water, stir thoroughly for 3 hours, then add 1.659g Mullite carrier, continue stirring for 2 hours, put the drug in an oven at 105°C for 16 hours, put the dried drug in a tube furnace at 700°C for roasting 4h, the CWM-II catalyst was obtained, and spinel-containing CoAl supported on Mullite was formed 2 o 4 and composite oxide CoWO 4 The mesoporous composite oxide catalyst with Co-W-Al-O active center, its typical crystal structure is shown in the at...
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