Preparation and properties of some alkyl derivatives of phenol, cresols, and xylenols

Dmitriev, S. A.; Zimina, K. I.; Kazakov, E. I.; Korenev, K. D.; Kotova, G. G.; Tsvetkov, O. N.

doi:10.1007/bf00730963

Cited by 3 publications

(1 citation statement)

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“…Coal tar contains a considerable amount of valuable chemicals including phenol, cresol, and xylenol 1,2 . Taking the middle and low temperature coal tar in northern Shaanxi, 3 the content of phenols in its 180–230°C distillation section is as high as 20–30%, in which, the sum of the phenol and cresol accounts for about 55%, and the xylenol content is about 30% of the total phenol content.…”

Section: Introductionmentioning

confidence: 99%

Hydroxymethylation of xylenol over micro/mesoporous TiO₂‐containing bifunctional catalyst: Effect of the Y zeolite incorporation with MCM‐41

Tao

Feng

et al. 2020

Asia-Pacific J Chem Eng

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The hydrodemethylation reaction of 3,4-xylenol on micro/mesoporous catalysts with active component TiO 2 was studied. TiO 2 /YM-m and TiO 2 /YM-c micro/mesoporous materials were, respectively, derived by loading TiO 2 with the composition and mechanical mixing of Al-MCM-41 and HY zeolite. The effect of the bifunctional catalysts on the catalytic performance of hydroxymethylation of xylenol before and after the introduction of Al-MCM-41 into HY was investigated in this study. Compared with TiO 2 /Y catalyst, TiO 2 / MCM-41, TiO 2 /YM-m, and TiO 2 /YM-c have higher selective dealkylation products, especially the selectivity of cresol. This is attributed to the addition of Al-MCM-41 mesoporous molecular sieve to eliminate diffusion limitation. Compared with TiO 2 /YM-m catalyst, the TiO 2 /YM-c composite with Al-MCM-41 coated structure grown on the surface of HY crystals has better catalytic conversion activity and ability to inhibit secondary reactions. This is because of the existence of the special "coating" of HY zeolite, which eliminates the diffusion limitation and prevents the product and the reaction intermediate from entering the micropores for multiple reactions, thereby reducing the occurrence of side reactions. Meanwhile, TiO 2 /YM-c catalyst has the best demethylation performance under the optimal reaction conditions, the conversion of 3,4-xylenol, the selectivity to phenol, and m-cresol were 52.15%, 62.17%, and 36.32%, respectively. And the TiO 2 /YM-c catalyst has good stability within 80 h of reaction.

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Section: Introductionmentioning

confidence: 99%

Hydroxymethylation of xylenol over micro/mesoporous TiO₂‐containing bifunctional catalyst: Effect of the Y zeolite incorporation with MCM‐41

Tao

Feng

et al. 2020

Asia-Pacific J Chem Eng

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Use of an aluminosilicate catalyst in the synthesis of alkylsalicylate additives

Дмитриева

Lyubimova

Zambrovskaya

et al. 1970

Chem Technol Fuels Oils

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Absorption spectra of commercial alkyl phenols in in the range 1670?2000 cm?1

Kotova

Zimina

1967

Chem Technol Fuels Oils

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Preparation and properties of some alkyl derivatives of phenol, cresols, and xylenols

Cited by 3 publications

References 1 publication

Hydroxymethylation of xylenol over micro/mesoporous TiO₂‐containing bifunctional catalyst: Effect of the Y zeolite incorporation with MCM‐41

Hydroxymethylation of xylenol over micro/mesoporous TiO₂‐containing bifunctional catalyst: Effect of the Y zeolite incorporation with MCM‐41

Use of an aluminosilicate catalyst in the synthesis of alkylsalicylate additives

Absorption spectra of commercial alkyl phenols in in the range 1670?2000 cm?1

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Preparation and properties of some alkyl derivatives of phenol, cresols, and xylenols

Cited by 3 publications

References 1 publication

Hydroxymethylation of xylenol over micro/mesoporous TiO2‐containing bifunctional catalyst: Effect of the Y zeolite incorporation with MCM‐41

Hydroxymethylation of xylenol over micro/mesoporous TiO2‐containing bifunctional catalyst: Effect of the Y zeolite incorporation with MCM‐41

Use of an aluminosilicate catalyst in the synthesis of alkylsalicylate additives

Absorption spectra of commercial alkyl phenols in in the range 1670?2000 cm?1

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Hydroxymethylation of xylenol over micro/mesoporous TiO₂‐containing bifunctional catalyst: Effect of the Y zeolite incorporation with MCM‐41

Hydroxymethylation of xylenol over micro/mesoporous TiO₂‐containing bifunctional catalyst: Effect of the Y zeolite incorporation with MCM‐41