Catalyst compositions comprising small size molecular sieves crystals deposited on a porous material

Patent metadata

Field	Value
Publication number	US-10239051-B2
Application number	US-201414902233-A
Country	US
Kind code	B2
Filing date	Jul 3, 2014
Priority date	Jul 4, 2013
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A catalyst composition contains an inorganic porous material with pore diameters of at least 2 nm and of crystals of molecular sieve. The crystals of molecular sieve have an average diameter, measured by scanning electron microscopy, not bigger than 50 nm. The catalyst composition has a concentration of acid sites ranges from 50 to 1200 μmol/g measured by TPD NH3 adsorption. An XRD pattern of the catalyst composition is the same as an XRD pattern of the inorganic porous material.

First claim

The invention claimed is:

1. A catalyst composition comprising an inorganic porous material with pore diameters of at least 2 nm and crystals of molecular sieve;
wherein the crystals of molecular sieve have an average diameter not bigger than 50 nm measured using Scanning Electron Microscopy, wherein the crystals of molecular sieve comprise a zeolite selected from the group consisting of MOR, FAU, EMM, MWW, BETA, ZSM-21, ZSM-42, AEI, CHA, ERI, LEV, OFF, ZSM-34, AFI, AEL, LTL, MFI (ZSM-5, silicalite, TS-1), MEL (ZSM-11, silicalite-2, TS-2), MTT (ZSM-23, EU-13, ISI-4, KZ-1), MFS (ZSM-57), HEU (Clinoptilolite), FER (ZSM-35, Ferrierite, FU-9, ISI-6, NU-23, Sr-D), TON (ZSM-22, Theta-1, ISI-1, KZ-2 and NU-10), LTL (L), MAZ (mazzite, Omega, ZSM-4) and mixtures thereof;
wherein the catalyst composition has a concentration of acid sites ranging from 50 to 1200 μmol/g measured by Temperature-Programmed Desorption of ammonia, TPD NH3; and
wherein an X-ray diffraction pattern of the catalyst composition is the same as an X-ray diffraction pattern of the inorganic porous material.

2. The catalyst composition according to claim 1 , further characterized in that the catalyst composition contains a Bronsted aciditic sites concentration of at least 10 μmol/g measured by pyridine desorption at 150° C.

3. The catalyst composition according to claim 1 , further characterized in that the inorganic porous material is amorphous.

4. The catalyst composition according to claim 1 , further characterized in that the catalyst composition contains up to 30 weight % of crystals of molecular sieve relative to a total weight of the catalyst composition.

5. The catalyst composition according to claim 1 , further characterized in that the surface area is of at least 250 m 2 /g measured using ASTM D3663.

6. The catalyst composition according to claim 1 , further characterized in that the ratio V total /V micro is of at least 5, wherein V total is the total porous volume of the catalyst composition and V micro is the microporous volume of the catalyst composition, and wherein V total and V micro are measured via ASTM D4365.

7. The catalyst composition according to claim 1 , further characterized in that the inorganic porous material has pores with a mesoporous volume and/or macroporous volume, and the crystals of molecular sieve have pores with a microporous volume, wherein a ratio of the microporous volume over the mesoporous and/or macroporous volume ranges from 0.2 to 0.005, and wherein the mesoporous volume and/or macroporous volume and the microporous volume are determined using ASTM D4365.

8. The catalyst composition according to claim 1 , characterized in that the catalyst composition further comprises one or more of:
phosphorus;
at least one metal selected from the group consisting of: B, Cr, Co, Ga, Fe, Li, Mg, Ca, Mn, La, Ti, Mo, W, Ni, Ag, Sn or Zn, Pt, Pd, Ru, Re, Os, Au, and combinations thereof;
at least one binder selected from the group consisting of: silica, silica alumina, metal silicates, metal oxides and/or metals, amorphous alumophophate or silica alumophosphates, gels including mixtures of silica and metal oxides, and combinations thereof.

9. The catalyst composition according to claim 1 , wherein the crystals of molecular sieve have a pore diameter smaller than 2 nm.

10. The catalyst composition according to claim 1 , further characterized in that the crystals of molecular sieve are of WI type.

11. The catalyst composition according to claim 1 , further characterized in that the inorganic porous material is:
a silica alumina, a SiO 2 , a Al 2 O 3 or a mixture of thereof; or
an amorphous inorganic material containing Al 2 O 3 and SiO 2 with an atomic ratio Al/Si >1.

12. The catalyst composition of claim 11 , wherein the inorganic porous material is the amorphous inorganic material containing Al 2 O 3 and SiO 2 with an atomic ratio Al/Si>1, and wherein the amorphous inorganic material contains elements different from Si, O, Al at a concentration below 500 ppm weight.

Assignees

• Total Res & Technology Feluy
• Centre Nat Rech Scient

Inventors

• Haw Kok-Giap
• Goupil Jean-Michel
• Gilson Jean-Pierre
• VALTCHEV Valentin
• Nesterenko Nikolai
• Minoux Delphine
• Dath Jean-Pierre

Classifications

• B01J29/00

  Catalysts comprising molecular sieves {(molecular sieves per se C01B)} · CPC title

• C10G35/06

  characterised by the catalyst used · CPC title

• B01J29/043

  Noble metals · CPC title

• C10G11/18

  according to the "fluidised-bed" technique · CPC title

• C07C2529/80

  Mixtures of different zeolites · CPC title