PL441762A1 - Process for preparing tereohthalic acid from p-cymene - Google Patents

Process for preparing tereohthalic acid from p-cymene

Info

Publication number
PL441762A1
PL441762A1 PL441762A PL44176222A PL441762A1 PL 441762 A1 PL441762 A1 PL 441762A1 PL 441762 A PL441762 A PL 441762A PL 44176222 A PL44176222 A PL 44176222A PL 441762 A1 PL441762 A1 PL 441762A1
Authority
PL
Poland
Prior art keywords
cymene
acid
mol
mpa
tereohthalic
Prior art date
Application number
PL441762A
Other languages
Polish (pl)
Other versions
PL245906B1 (en
Inventor
Dawid Lisicki
Beata Orlińska
Kinga Nowak
Original Assignee
Politechnika Śląska
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Politechnika Śląska filed Critical Politechnika Śląska
Priority to PL441762A priority Critical patent/PL245906B1/en
Publication of PL441762A1 publication Critical patent/PL441762A1/en
Publication of PL245906B1 publication Critical patent/PL245906B1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C63/00—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
    • C07C63/14—Monocyclic dicarboxylic acids
    • C07C63/15—Monocyclic dicarboxylic acids all carboxyl groups bound to carbon atoms of the six-membered aromatic ring
    • C07C63/26—1,4 - Benzenedicarboxylic acid
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/58—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by oxidation reactions introducing directly hydroxy groups on a =CH-group belonging to a six-membered aromatic ring with the aid of molecular oxygen
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
    • C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Przedmiotem zgłoszenia jest sposób otrzymywania kwasu lereftalowego z p-cymenu, który polega na tym, że utlenianie p-cymenu prowadzi się czynnikiem utleniającym zawierającym tlen w polarnym rozpuszczalniku, przy stosunku objętościowym p-cymenu do rozpuszczalnika w przedziale 1:20 do 10:1, korzystnie 1:4, wobec katalizatora w ilości 0,01% - 10% mol w przeliczeniu na surowiec korzystnie od 1% mol, bromków organicznych w ilości 0,01% - 100% mol w przeliczeniu na surowiec, korzystnie 5% mol, w czasie 2 h – 6 h, temperaturze od 50°C do 250°C, korzystnie w 130°C, pod ciśnieniem od 0,11 MPa do 5,0 MPa, korzystanie 2,0 – 3,0 MPa, po czym proces prowadzi się w temperaturze, korzystnie 130°C w czasie co najwyżej do 2 godzin, korzystnie 2 h.The subject of the application is a method for obtaining lerephthalic acid from p-cymene, which consists in the oxidation of p-cymene being carried out with an oxidizing agent containing oxygen in a polar solvent, with a volume ratio of p-cymene to the solvent in the range of 1:20 to 10:1, preferably 1:4, with a catalyst in the amount of 0.01% - 10% mol based on the raw material, preferably from 1% mol, organic bromides in the amount of 0.01% - 100% mol based on the raw material, preferably 5% mol, in time 2 h - 6 h, temperature from 50°C to 250°C, preferably at 130°C, pressure from 0.11 MPa to 5.0 MPa, using 2.0 - 3.0 MPa, and then the process is carried out at a temperature, preferably 130°C, for a maximum of 2 hours, preferably 2 hours.

PL441762A 2022-07-18 2022-07-18 Method of producing terephthalic acid from p-cymene PL245906B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL441762A PL245906B1 (en) 2022-07-18 2022-07-18 Method of producing terephthalic acid from p-cymene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL441762A PL245906B1 (en) 2022-07-18 2022-07-18 Method of producing terephthalic acid from p-cymene

Publications (2)

Publication Number Publication Date
PL441762A1 true PL441762A1 (en) 2024-01-22
PL245906B1 PL245906B1 (en) 2024-10-28

Family

ID=89621482

Family Applications (1)

Application Number Title Priority Date Filing Date
PL441762A PL245906B1 (en) 2022-07-18 2022-07-18 Method of producing terephthalic acid from p-cymene

Country Status (1)

Country Link
PL (1) PL245906B1 (en)

Also Published As

Publication number Publication date
PL245906B1 (en) 2024-10-28

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