# US 2019/0168195 A1 · Process for preparing a catalyst based on izm-2 from a solution comprising specific precursors and use for the isomerization of paraffinic feedstocks

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- Number: US 2019/0168195 A1
- Document ID: US20190168195A1
- Status: Published application
- Kind: A1
- Application number: 16/212,160
- Filed: 2018-12-06
- Published: 2019-06-06
- Earliest claimed: 2017-12-06
- Assignees: Ifp Energies Nouvelles
- Applicants: IFP Energies nouvelles
- Inventors: Christophe BOUCHY
- Web page: https://patentgrep.com/patent/US20190168195A1

## CPC

- B01J 29/70: of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J 21/04: Alumina
- B01J 23/42: Platinum
- B01J 23/44: Palladium
- B01J 29/74: Noble metals
- B01J 29/76: Iron group metals or copper
- B01J 29/78: containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J 37/0009: {Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst}
- B01J 37/0201: {Impregnation}
- B01J 37/0207: {Pretreatment of the support}
- B01J 37/0209: {involving a reaction between the support and a fluid}
- B01J 37/0213: {Preparation of the impregnating solution}
- C07C 5/2775: {with crystalline alumino-silicates, e.g. molecular sieves}
- C10G 45/64: containing crystalline alumino-silicates, e.g. molecular sieves
- B01J 2229/18: to introduce other elements into or onto the molecular sieve itself
- B01J 2229/186: not in framework positions
- B01J 2229/20: to introduce other elements in the catalyst composition comprising the molecular sieve, but not specially in or on the molecular sieve itself
- B01J 2229/42: Addition of matrix or binder particles
- C07C 2529/74: Noble metals
- C07C 2529/76: Iron group metals or copper
- C07C 2529/78: containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- C10G 2300/1085: Solid paraffins
- C10G 2300/70: Catalyst aspects
- Y02P 30/20: using bio-feedstock
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

The present invention relates to a process for preparing a difunctional catalyst using a zeolite IZM-2, a hydrogenating function and a matrix. The preparation process according to the invention simultaneously allows preferential localization of said hydrogenating function on the surface and/or in the microporosity of zeolite IZM-2 and homogeneous distribution of the hydrogenating function in the catalyst and preferably on zeolite IZM-2 by means of using an impregnation solution comprising specific noble metal precursors combined with the presence of ammonium salts, with a quite precise ratio of ammonium salt to noble metal.

## Claims

### Claim 1

Process for preparing a difunctional catalyst comprising an acid function constituted by zeolite IZM-2, a hydrogenating function comprising at least one noble metal from group VIII of the Periodic Table, chosen from platinum and palladium, and a matrix, said process comprising at least the following steps:
i) a step of preparing the support for the catalyst by forming zeolite IZM-2 with a matrix,
ii) a step of depositing at least one noble metal from group VIII of the Periodic Table by impregnation of the support prepared in step i) with an aqueous solution comprising
at least one ammoniacal compound chosen from the platinum(II) tetramine salts of formula Pt(NH3)4(OH)2, Pt(NH3)4(NO3)2 or Pt(NH3)4X2, the platinum(IV) hexamine salts of formula Pt(NH3)6X4; the platinum(IV) halopentamine salts of formula (PtX(NH3)5)X3; the platinum N-tetrahalodiamine salts of formula PtX4(NH3)2; and the halogenated compounds of formula H(Pt(acac)2X); the palladium(II) salts of formula Pd(NH3)4SO4 or Pd(NH3)4X2, X being a halogen chosen from chlorine, fluorine, bromine and iodine, and “acac” representing the acetylacetonate group,
and at least one ammonium salt chosen from ammonium nitrate NH4NO3, ammonium chloride NH4Cl, ammonium hydroxide NH4OH, ammonium bicarbonate NH4HCO3 and ammonium acetate NH4H3C2O2, alone or as a mixture,
the mole ratio between the ammonium salt and the noble metal being between 0.1 and 400.

### Claim 2 (depends on 1)

Process according to claim 1, in which step i) is performed by blending-extrusion.

### Claim 3 (depends on 1)

Process according to claim 1, in which said matrix used in step i) is alumina.

### Claim 4 (depends on 1)

Process according to claim 1, in which the support obtained on conclusion of step i) is subjected to a drying step performed at a temperature of between 50 and 180° C.

### Claim 5 (depends on 1)

Process according to claim 1, in which X is chlorine.

### Claim 6 (depends on 1)

Process according to claim 1, in which the impregnation of the support in step ii) is performed via the method of “dry” impregnation or excess impregnation of said solution.

### Claim 7 (depends on 1)

Process according to claim 1, in which the aqueous solution from step ii) comprises ammoniacal compounds chosen from the platinum(II) tetramine salts of formula Pt(NH3)4(OH)2, Pt(NH3)4(NO3) or Pt(NH3)4X2, the platinum(IV)hexamine salts of formula Pt(NH3)6X4; the platinum(IV) halopentamine salts of formula (PtX(NH3)5)X3; the platinum N-tetrahalodiamine salts of formula PtX4(NH3)2; and the halogenated compounds of formula H(Pt(acac)2X); X and “acac” having the abovementioned meaning.

### Claim 8 (depends on 7)

Process according to claim 7, in which said solution comprises ammoniacal compounds chosen from the platinum(II) tetramine salts of formula Pt(NH3)4(OH)2, Pt(NH3)4(NO3) or Pt(NH3)4X2.

### Claim 9 (depends on 1)

Process according to claim 1, in which the aqueous solution from step ii) or an aqueous impregnation solution different from that of step ii) comprises the precursors of the metals from groups IIIA, IVA and VIIB of the Periodic Table of the Elements chosen from gallium, indium, tin and rhenium.

### Claim 10 (depends on 1)

Process according to claim 1, in which the mole ratio between the ammonium salt and the noble metal is between 0.3 and 150 in the solution from step ii).

### Claim 11 (depends on 1)

Catalyst comprising an acid function constituted by zeolite IZM-2, a hydrogenating function comprising at least one noble metal from group VIII of the Periodic Table chosen from platinum and palladium, and a matrix, obtained via the process according to claim 1.

### Claim 12 (depends on 11)

Process for the isomerization of a paraffinic feedstock containing between 9 and 25 carbon atoms, said process comprising placing said paraffinic feedstock in contact with at least said catalyst according to claim 11, said process being performed at a temperature of from 200° C. to 500° C., a partial pressure of hydrogen of from 0.3 to 5.5 MPa, a total pressure of from 0.45 to 7 MPa, and a feed space velocity, expressed in kg of feedstock introduced per kilogram of catalyst and per hour, of from 0.25 to 30 h−1.

### Claim 13 (depends on 12)

Process according to claim 12, in which said paraffinic feedstock is produced from renewable resources chosen from vegetable oils, oils from algae or algal oils, fish oils and fats of vegetable or animal origin, or mixtures of such feedstocks.

### Claim 14 (depends on 12)

Process according to claim 12, in which said paraffinic feedstock is produced by hydrotreatment of said renewable resources.

### Claim 15 (depends on 12)

Process according to claim 12, in which said paraffinic feedstock is a paraffinic feedstock produced via a process involving a step of upgrading via the Fischer-Tropsch route.