Method for producing porous molded body, method for producing catalyst for α-olefin dimerization, method for producing α-olefin dimer, porous molded body, and catalyst for α-olefin dimerization

Patent metadata

Field	Value
Publication number	US-11247194-B2
Application number	US-201716471420-A
Country	US
Kind code	B2
Filing date	Dec 21, 2017
Priority date	Dec 22, 2016
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

Provided is a method of producing a porous molded body, the method including: the step of obtaining a molded body by molding a raw material that contains from 1 part by mass to 100 parts by mass of a bicarbonate compound (A) represented by AHCO3 (wherein, A represents Na or K) and from 0 parts by mass to 99 parts by mass of a compound (B) represented by BnX (wherein, B represents Na or K; X represents CO3, SO4, SiO3, F, Cl, or Br; and n represents an integer of 1 or 2 as determined by the valence of X) (provided that a total amount of (A) and (B) is 100 parts by mass); and the step of obtaining a porous molded body by performing a heat treatment of the molded body in a temperature range of from 100° C. to 500° C. and an atmosphere that contains water vapor in an amount of from 1.0 g/m3 to 750,000 g/m3 and thereby thermally decomposing not less than 90% by mass of the bicarbonate compound (A).

First claim

The invention claimed is:

1. A porous molded body comprising a carbonate compound (Al) that is at least either one of sodium carbonate (Na 2 CO 3 ) and potassium carbonate (K 2 CO 3 ), wherein
pores having a pore diameter in a range of from 0.05 μm to 10 μm have a median pore size of larger than 0.36 μm but 0.90 μm or smaller,
the pores having a pore diameter in a range of from 0.05 μm to 10 μm have a volume in a range of from 0.10 mL/g to 0.30 mL/g, and
the porous molded body has a crushing strength of from 1.8 kgf to 8.5 kgf.

2. The porous molded body according to claim 1 , wherein a content ratio of the carbonate compound (Al) is not less than 70% by mass with respect to a total amount of the porous molded body.

3. The porous molded body according to claim 1 , further comprising at least one compound (B1) represented by NanY or KnY (wherein, Y represents SO 4 , SiO 3 , F, Cl, or Br; and n represents an integer of 1 or 2 as determined by the valence of Y).

4. The porous molded body according to claim 1 , wherein the median pore size is in a range of from 0.40 μm to 0.90 μm.

5. The porous molded body according to any claim 1 , wherein
the volume of the pores is from 0.20 mL/g to 0.30 mL/g, and
the crushing strength is from 2.2 kgf to 7.0 kgf.

6. The porous molded body according to any claim 1 , wherein the carbonate compound (Al) is K 2 CO 3 .

7. The porous molded body according to any c 1 aim 1 , further comprising a graphite (C).

8. An a-olefin dimerization catalyst, in which an alkali metal (D) is supported on the porous molded body according to c 1 aim 1 .

Assignees

• Mitsui Chemicals Inc

Inventors

• Murakami Masami
• Takahashi Naoya
• NIISHIRO Ryo

Classifications

• B01J35/55

  Cylinders or rings · CPC title

• B01J35/37

  Crush or impact strength · CPC title

• B01J23/04 Primary

  Alkali metals · CPC title

• C07C2521/18

  Carbon · CPC title

• B01J37/10 Primary

  in the presence of water, e.g. steam · CPC title