Catalytic component comprising micro-ferromagnetic material and use of said component for heterogeneous catalytic reactions
A ferromagnetic material, heterogeneous catalysis technology, applied in catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problems of aging, heating performance change, etc.
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Embodiment 1
[0044] Example 1: Preparation of catalyst
[0045] Preparation of Catalysts on Cerium Oxide Supports
[0046] By the presence of CeO in mesitylene 2 Decomposition of Ni(COD) without 2 Preparation of 10 wt% nickel on ceria (abbreviated as Ni(10 wt%) / CeO 2 ).
[0047] According to the conventional preparation method, 1560mg Ni(COD) 2 Dissolve in 20mL mesitylene, then add 3gCeO 2 . The resulting mixture was heated at 150°C for 1 hour under an argon atmosphere with vigorous stirring. The mixture was milky white initially and black at the end of the reaction. After decantation, the translucent supernatant was removed and the resulting particles were washed three times with 10 mL of toluene. Toluene is then removed under vacuum, so that Ni10wt% / CeO can be obtained 2 (3.5 g) of the thick powder, which was collected and stored in the glove box. Analysis by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) confirmed that the ceria supported 9% by weight of nickel (target ...
Embodiment 2
[0052] Example 2: Preparation of catalyst on steel wool support
[0053] Ultrafine steel wool (Gerlon, available from Castorama). ICP-MS analysis of the ultrafine steel wool yielded an iron composition of 94.7% by weight. EDS mapping shows that there are a lot of impurities (mainly potassium, manganese, silicon) on the surface of steel wool. SEM observation can confirm that the wire diameter of the ultrafine steel wool used is about 100 μm, and the surface is rough and uneven.
[0054] Experimental protocol for deposition of nickel metal on ultrafine steel wool (filament entanglements about 100 μm in diameter, containing 94.7 wt% iron) compared to CeO 2 The experimental protocol for upper deposition is basically the same. 1560mg Ni(COD) 2 Dissolve in 100 mL of mesitylene to completely submerge steel wool (3 g). After stirring rapidly at 150°C for one hour under argon, the mixture was placed in a glove box and the solution (black) was drained. The steel wool itself also t...
Embodiment 3
[0056] Example 3: Methanation reaction: measurement of conversion and calculation of selectivity
[0057] methanation reaction
[0058] [Chemical formula 1]
[0059] CO 2 ·+·4·H 2 ·→·CH 4 ·+·2·H 2 O·
[0060] [Chemical formula 1] is a combination of the following [Chemical formula 2] and [Chemical formula 3]:
[0061] [Chemical formula 2]
[0062]
[0063] and
[0064] [Chemical formula 3]
[0065] CO·+·3·H 2 ·→·CH 4 ·+·H 2 O·
[0066] The reaction was carried out in a quartz fixed-bed tubular continuous reactor 1 (Avitec) (inner diameter: 1 cm, the height of the catalyst bed 4, depending on the heating element, was about 2 cm, placed on the fritted glass 3) (see Fig. 1); the gas flow can be is the updraft 6 ( Figure 1A ) or downdraft 7 ( Figure 1B ). Coil 2 (from Five Celes) used was a solenoid with an inner diameter of 40 mm and a height of 40 mm, which constituted an external magnetic field inductor and was connected to the generator, with a resonant fre...
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