Nickel series conversion catalyst using alpha-Al2-O3 as carrier
A catalyst and nickel-based technology, applied in the field of nickel-based conversion catalysts, can solve the problems of maintaining the catalyst, reducing the activity and service life of the catalyst, and limiting the temperature range of the catalyst.
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Embodiment 1
[0016] Embodiment 1: will have active Al 2 o 3 After calcination at a high temperature above 1370°C for 10 hours, take a sample to measure the Γ-Al 2 o 3 The residual amount is 5%, according to this amount to reconfigure TiO 2 And other components, based on the total weight of the catalyst, add the following components in percentage weight: NiO-14%, TiO2 -10%, Al 2 o 3 -75%, B 2 o 3 -1%, at this time the Al which has been calcined at high temperature 2 o 3 A large amount is a-Al 2 o 3 , compare it with TiO 2 After mixing and ball milling with other components, add appropriate amount of soft water to mix evenly during the conveying process of the screw conveyor, press the powdery material into a block through the pre-pressing machine, and then send it to the granulator to make granular material, and then send it into the Press the ring press machine to form a circular carrier. After the carrier is calcined at 1200-1350°C for 10 hours, it will be immersed in a nickel ...
Embodiment 2
[0017] Embodiment 2: will have active Al 2 o 3 After calcination at a high temperature above 1370°C for 10 hours, take a sample to measure the Γ-Al 2 o 3 The residual amount is 1.8%, according to this amount to reconfigure TiO 2 And other components, based on the total weight of the catalyst, add the following components in percentage weight: NiO-16%, TiO 2 -0.5%, Al 2 o 3 -79.5%, B 2 o 3 -1%, Graphite-3% Produce the present invention by the method in embodiment 1, this catalyst adopts chemical analysis method to detect after spinel melting, under the situation of 800 ℃, 900 ℃, 1000 ℃, contain 0.2% by weight NiAl 2 o 4 , there is no black powder on the surface of the catalyst, indicating that there is no carbon formation. The average pore diameter of the catalyst is 1.7nm, the pore volume is 1.23ml / g; the specific surface area is 360m 2 / g, the bulk density is 1.1g / ml, and the compressive strength is 470N / cm, the catalyst is used to accelerate natural gas (CH 4 ) in...
Embodiment 3
[0018] Embodiment 3: will have active Al 2 o 3 After calcination at a high temperature above 1370°C for 10 hours, take a sample to measure the Γ-Al 2 o 3 The residual amount is 4%, according to this amount to reconfigure TiO 2 And other components, based on the total weight of the catalyst, add the following components in percentage weight: NiO-13%, TiO 2 -2%, Al 2 o 3 -84%, B 2 o 3 -1%, the present invention is produced according to the method in Example 1. After the spinel is melted, the catalyst is detected by chemical analysis, and contains 0.15% by weight of NiAl at 800°C, 900°C, and 1000°C. 2 o 4 , there is no black powder on the surface of the catalyst, indicating that there is no carbon formation. The average pore diameter of the catalyst is 1.5nm, the pore volume is 1.38ml / g; the specific surface area is 400m 2 / g, the bulk density is 1.1g / ml, and the compressive strength is 480N / cm, the catalyst is used to accelerate natural gas (CH 4 ) into synthesis gas f...
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Abstract
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