Absorption separation of dicholorobenzene isomers

Patent

Report

CATALYSIS Selective

dealkylation

Ti-containing silicalite zeolite microspheres having a diameter of 5-1000 microns are used as catalysts for aromatic hydrocarbon hydroxylation and olefin epoxidation (with HzOz used in both processes). The preparation of the zeolite is described.

of 1,Gdialkylbenzenes

l-l. Sato; N. Ishii; K. Hirose Sumitomo Chemical Co. ltd. U.S.4,642,409, Feb. 10, 1987; Appl.

Catalyst Feb. 10, 1986

An industrial method for selective dealkylation of 1,4dialkylbenzenes in a dialkylbenzene mixture is carried out in the presence of an ion-exchanged zeolite catalyst. The catalyst is prepared by treating Na+-ZSM-5 zeolite (NalAI = 0.95/l) (preparation given) with 8 wt.% Mg(OAc)z followed by drying and calcining to give MgO-Nat-ZSM-5 (MgO 20 wt.%.).

Catalyst

for the production

of aromatic

hydrocarbons

l-l. Katsuno; T. Murakawa; T. Yoneda Research Association for Utilisation of Light Oil Eur. Pat. Appl. 201,856, Nov. 20, 1986; Jap. Appl.

May

7, 1985

for gasoline

manufacture

from

methanol

H. Kudo; J. Kaita; R. Endo et al. Chiyoda Chemical Engineering and Construction Co. Ltd. Jpn Kokai Tokkyo Koho 87,15,288, Jan. 23, 1987; Appl. July 15, 1985 Catalysts for converting MeOH contain alkali cation-exchanged ably ZSM-5 zeolite, SiOz/AlzOs

Aromatic

or MezO to C,=e gasoline crystalline aluminosilicates mol ratio 25-500: 1).

fractions (prefer-

hydrocarbons

M. Ushio; T. Ishii; H. Okazaki et al. New Fuel Oil Development Technology Research Assoc. Jpn Kokai Tokkyo Koho 86,268,634, Nov. 28, 1986; Appl. 1985

May

24,

Aromatic hydrocarbons are prepared by contacting > 1 hydrocarbon selected from paraffins, olefins, acetylenes, cyclic paraffins and cyclic olefin hydrocarbons with L-type zeolite catalyst treated with a halogen-containing compound and containing deposited ft.

Aromatic hydrocarbons are prepared by heating aliphatic C,.,z hydrocarbons in the presence of zeolite ZSM-5 (SiOz/A1203 = 80) catalysts and > = 1 metal fluoride selected from Cu, Ag, Zn, Cd, Ga, Sn, Cr. MO, W, Se, Te, Re and Ni.

Hydrocarbon

SEPARATION

conversion

L. B. Young Mobil Oil Corp. Can. 1.215082, Dec. 9, 1986;

with

EM-22

U.S. Appl.

reolite

Apr. 30, 1982

ZSM-22 zeolites are catalysts for selective formation of pdisubstituted aromatic hydrocarbons, by such reactions as dispropottionation, alkylation (e.g., with MeOH or CzH& crackingdealkylation and transalkylation. The p-isomers are formed in larger amounts than those observed under equilibrium-control conditions.

Carboxylic

acids and esters

D. Feitlar Air Products U.S.4,612,387,

and Chemicals Inc. Sep. 16, 1986; Appl.

Jan. 4, 1982

Monocarboxylic acids and esters and C4.,c (gasoline-range) hydrocarbons are produced by conversion of C,.,-alcohols with CO in the presence of Rh-free ZSM-5 zeolite (SiOz/AlzOz ratio = > 6:lj at > 1 atmosphere in the absence of a halide promoter. The process is especially suitable for the production of HOAC and MeOAc from MeOH; in addition CzH4 can be co-produced to prepare a suitable feedback for vinyl acetate manufacture.

Preparation

of cyclohexanone

P. RoffTa; M. Padovan; Montedipe S.p.A. Eur. Pat. Appl. 208,311,

E. Moretti

oxime et a/.

Jan. 14, 1987; It. Appl.

Cyclohexanone oxime was prepared by reaction NHs and HzOz in the presence of a titanium-silicalite

July

10, 1985

of cyclohexanone, zeolite catalyst.

pDialkylbenzenes K. Kasano; S. Nakamura; M. lshii et a/. Technology Research Association for New Application Development for Light-Weight fractions Jpn Kokai Tokkyo Koho 86,221,135; 86,221,136, Oct. 1, 1986; Appls. Mar. 27, 1985 p-Dialkylbenzenes, useful as intermediates for p-cresol, hydroquinone and aromatic vinyl monomers (e.g., vinyltoluene, divinylbenzene), were prepared with high p-selectivity and high conversion rates by alkylation of monoalkylbenzenes with olefins in the presence of modified zeolites. The catalysts were prepared by treating proton-exchanged zeolites with heteropolyacids, e.g., 12tungstophosphoric acid, or their metal salts, drying and heating.

lsomeric bents

silicalite

catalyst

G. Belussi; M. Clerici; F. Buonomo et al. Enichem Sintesi S.p.A. Eur. Pat. Appl. 200,260, Dec. 10, 1986; It. Appl.

Apr. 23, 1985

toluenediamine

H. A. Zinnen UOP Inc. U.S.4,633,018,

separation

Dec. 30, 1986; Appl.

using zeolite

adsor-

Dec. 20, 1985

2,4-Toluenediamine, useful as diisocyanate precursor, is separated from 2,6-toluenediamine, and in some cases from other toluenediamines present in feed mixtures by contacting with a cationexchanged X-, Y-, or K-type zeolite adsorbent, and then desorbing the adsorbed diamine using a lower alcohol or amine.

Separation adsorption

of with

H. A. Zinnen; UOP Inc. U.S.4,642,397,

T. S. Franczyk

2,4-dinitrotoluene zeolite

Feb. 10, 1987; Appl.

from

isomers

by

Oct. 1, 1985

2.4-Dinitrotoluene is separated from a mixture with 2,6dinitrotoluene by selective adsorption with an L-type zeolite containing K ions, an X-type zeolite containing Na, Ca, Ba or K ions, or a Y-type zeolite containing Ca, Ba, K, Li or Mg ions and subsequent desorption of the 2,4-dinitrotoluene with a Cs.5 alcohol, a ketone, an ester or PhNOz.

Separation

of fructose

M. Negoro; K. Kanda; M. Minemoto Mitsubishi Heavy Industries Ltd. Jpn Kokai Tokkyo Koho 86.274,700,

et al. Dec. 4,1986;

Appl. May 30,1985

In separating fructose from its mixture with glucose in a solution containing Mg2+, on a Ca zeolite, the sugar solution was adjusted by adding CaC12 to Ca’+/Mg 2+ 40-4.5. The zeolite column could be used for a long period of time without degeneration of activity.

Recovery

of lower

alkenes

and alkynes

by adsorption

T. Nakamra; E. Nishikawa; T. Koyama Toa Nenryo Kogyo K.K. Jpn Kokai Tokkyo Koho 86,251,630, Nov. 8.1986;

Appl.

May

1,1985

Lower alkenes and alkynes, especially CzH4 and &Ha, are separated from gas with adsorbents prepared by treating X- or Y-type zeolite with aqueous Na2COa, washing and calcining.

Absorption Ti-containing

PROCESSES

separation

of dicholorobenzene

K. Miwa; M. Watanabe; K. Tada Toray industries Inc. Jpn Kokai Tokkyo Koho 86,268,636, 1985

ZEOLITES,

Nov.

28, 1986;

1988, Vol8,

isomers

Appl.

May

January

23,

87

Patent

Report

Pure m-Cl&H., was separated p-dicholorobe?zenes by adsorption containing > = 60 mol.% Li+.

Removal

of Mel from

from

mixtures X-type

on

of zeolite

o-, m-, and adsorbents

Odorless

gas streams

Eur.

Ltd.

Pat. Appl.

212,849,

Mar.

4, 1987;

U.K.

Appl.

July

23,

1985

Mel is selectively adsorbed and subsequently recovered from a gas mixture by passing the gas over a Cu(l)-exchanged zeolite. The zeolite used has a faujasite-type structure and has a Si:AI ratio of 1.2:3.

Kyoiku

Kokai

Sozai

Tokkyo

The title polymers presence

Antiglare Teijin Jpn

Manufacture

of a zeolite

I. Miyanohara;

H. Miyazaki;

Toyo Soda Jpn 1986

Kokai

Mfg

detergent

builder

Co. Ltd.

Tokkyo

Koho

86,270,211,

Nov.

29,

1986;

Appl.

Apr.

21,

At least 5 wt.% of a Na aluminate aqueous solution (7-20 wt.% A1203 concentration) is fed into a reaction tank and stirred while a Na silicate aqueous solution (5-20 wt.% SiOz concentration) and the remaining Na aluminate aqueous solution are gradually fed into the tank. The mixed solution with 1.8-2.2 Si02/A1203 mol ratio is stirred, then heated, to crystallize and form zeolite for use as a builder in detergents.

Liquid

detergent

T. Ouhadi;

composition

plastic

Offen.

Feb.

12, 1987;

U.S.

Appl.

Aug.

N. Hara;

Y. Tai;

detergent et a/.

Kokai

Detergents polyacetal i&300), crushed primary

Tokkyo

1986;

Appl.

Feb.

foaming agents

20,

ethylene in the

films

Koho

86,209,152,

Nippon

films

Appl.

Mar.

14,1985

by coating zeolites with

of vegetables

transpaparticle

and fruits

T. Yamakawa

Industrial

Tokkyo

17,986;

are prepared containing

of the freshness S. Ichimura;

Chemical

Kokai

Sep.

Co. Ltd.

Koho

86,293,375,

Dec.

25,

1986;

Appl.

Crystalline zeolites, bentonite, K permanganate, CalOH), loidal silica are mixed and molded to give a solid preparation diam.) for the preservation of the freshness of vegetables by removing the ethylene and Co2 generated.

of zeolite

for adding

June

21,

and

col(1 mm and fruits

to concrete

Koho

87,01,800,

Kokai

Tokkyo

Koho

87,21,739,

Jan.

30,1987;

Appl.

July

Green tuff (containing zeolite crystals) is crushed and remove surface water and water of crystallization, and the granular zeolite l-20 wt.% is added to concrete. It freeze-thawing, efflorescence, expanding and shrinking, creases mixing water consumption.

18,1985 fired to resulting prevents and de-

compositions Moisture-repellent

K. Nagaai

Lion Corp. Jpn

Tokkyo

Y. Kobayashi;

Jpn

5, 1985

A liquid detergent composition contains a liquid nonionic sutfactant and builders comprising N(CHzC02H)3 (or a salt) and a zeolite. The composition contains little or no phosphate.

High-bulk-density

25,

T. Sato

Co.

3,625,189,

K.K.

Aug.

Ltd. Kokai

Preservation

Jpn 1985

Kagaku

86,190,534,

T. Kanai

Manufacture

L. Dehan

Colgate-Palmolive Ger.

K.K.: Daiichi

Koho

Scratch-resistant, antiglare rent films with thermoplastics diameter l-6 microns.

S. Hashimoto

foams

foams are manufactured by thermally with foaming agents and crosslinking of crystalline zeolites as deodorents.

K. Shikayama;

lInERGENTS

crosslinked

K. Kariyama

Nippon Jpn 1985

APPLICATIONS

polyethylene

M. Mori;

G. K. Pearce

BP Chemicals

MISCELLANEOUS

Jan.

7,1987;

Appl.

June

28,1985

containing > = 1 organic chelating agent selected from carboxylates (-CHC02MO-1, (M = alkali metal, n = EDTA salts and nitriloacetic a&d salts are kneaded, mixed, and coated with a zeolite A fine powder, having average granules < 10 microns, to prepare granules.

anti-microbial

Z. Hagiwara;

Y. Kurihara;

Kanebo

Hagiwara

Jpn July

Ltd.;

Kokai Tokkyo 4, 1985

S. Ando

Giken

Koho

zeolite

compositions

et al.

K.K.

87,07,746,

87,07,748,

The compositions were prepared antimicrobial zeolties, e.g., Na.AgCuY or with liquid paraffins.

by

Jan.

14,

1987;

Appls.

treating metal-containing zeolite, with fluoropolymers

PATENTSRECEIVEDBUTNOTABSTRACTED Ethers by addition reaction over acid zeolite catalysts Y. Fukuoka;

Asahi Jpn

Adsorbent

Industry

Tokkyo

Jpn

Kokai

Synthesis Mobil

alcohols

Koho

Metal

86,249,944,

Nov.

CuCI,

Industries

Tokkyo

Koho

7,1986;

supported

Ltd; Sumikin

86,181,891,

of large crystal

zeoliie

Appl.

Apr.

26,1985

on mordenite

Aug.

Kako

K.K.; Kyodo

14,1986;

Appl.

Feb.

Oxygen 5, 1985

Oct.

ZEOLITES,

15, 1986;

1988, Vol8,

Tokkyo

U.S.

Appl.

by cracking

January

Apr.

8, 1985

a higher-boiling

zeolite Heavy

Jpn Kokai 1985

Tokkyo

Improvement reolite K. Mori;

Koho

Koho

13,1986;

U.S.

Appl.

June

3,

Ltd. 86,264,087,

of soil retention K. Tsuneyoshi;

Heavy Tokkyo Appls.

Nov.

21,

1986;

Appl.

of N and P by addition

May

17,

of powdered

S. Yokoyama

Industries

Ltd.

Koho 86,264,086; May 17, 1985

fertilizers

86,266,383,

containing

Nov.

allophane

21,1986

& Nov.

and zeolite

S. Yokoyama

Mitsubishi

Heavy

Jpn 1985

Tokkyo

Kokai

Dec.

used as fertilizer

Industries

Controlled-release K. Mori;

86,283,687,

K. Tsuneyoshi

Mitsubishi

Jpn Kokai 26, 1986;

E. W. Valyocsik 197,775,

K. Mori;

Mitsubishi

ZSM-5

Oil Corp. Pat. Appl.

Jpn Kokai 1985

N-containing

Manufacture of high-octane gasoline feedback over a zeoliie catalyst Mobil Oil Corp.

88

primary

T. Takano

D. H. Olson; Eur.

with

Co. Ltd.

for CO containing

Y. Sugimoto;

Sumitomo Co. Ltd.

olefins

M. Tojo

Chemical Kokai

of tertiary

Industries Koho

Ltd. 86,266,382,

Nov.

26,

1986;

Appl.

May

17,