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US 2026/0097392 A1Published application
Preparation method of nickel catalyst for hydrogenation reaction
AssigneeHanwha Solutions Corporation
InventorsWoo Jin PARK, Eui Geun JUNG, Bongsik JEON, Byungjin LEE
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Abstract
The preparation method of a nickel catalyst for a hydrogenation reaction according to the invention subjects a nickel catalyst to a two-step passivation process after reduction, and thus, both safety and reaction activity of the nickel catalyst for a hydrogenation reaction of petroleum resin are excellent.
Claims12
A method for preparing a nickel catalyst comprising:
- a step of preparing a catalyst precursor mixture comprising a nickel precursor (step 1);
- a step of precipitating the catalyst precursor mixture to obtain a catalyst precursor (step 2);
- a step of drying, calcining and reducing the catalyst precursor to prepare a catalyst (step 3);
- a first passivation step of passivating the catalyst using mixed gas comprising air and nitrogen (step 4);
- and
- a second passivation step of passivating the catalyst using mixed gas comprising air and nitrogen at a temperature different from the temperature of the first passivation step, after the first passivation step (step 5).
3 more elements
A nickel catalyst comprising nickel on a solid carrier, and
- having H2-TPR peak maximum at 120 to 200° C.,
- wherein the half-width of the H2-TPR peak is 90 or less, and
- a stabilization degree calculated by the following Calculation Formula 1 is 55 to 70%:
- [
- Calculation
-
- Formula
-
- 1
- ]
- Stabilization
-
- degree
-
- (
- %
- )
- =
- (
- base
-
- area
-
- of
-
-
- TPR
-
- graph
-
- of
-
- catalyst
- ÷
- weight
-
- of
-
- sample
- )
- /
- (
- base
-
- area
-
- of
-
- TPR
-
- graph
-
- of
-
- oxidized
-
- catalyst
- ÷
- weight
-
- of
-
- sample
- )
- )
- ⨯
- 100
64 more elements
Dependencies are inferred from the claim text.