Пассивация никеля в присутствии ванадия на катализаторах крекинга

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Проведены эксперименты по совместной пассивации никеля и ванадия борсодержащей добавкой на катализаторе крекинга. Исследовано влияние пассивации металлов маслорастворимой добавкой на основе бора на характеристики катализатора и его активность в крекинге углеводородного нефтяного сырья. Оценена активность борсодержащего пассиватора в дезактивации ванадия. Установлено, что применение пассиватора не увеличивает устойчивость катализатора к основному отравляющему действию ванадия, разрушению цеолитной структуры, однако снижает дегидрирующую активность ванадия, значительно улучшая характеристики процесса крекинга углеводородного сырья.

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作者简介

Искандер Шакиров

Московский государственный университет имени М.В. Ломоносова

编辑信件的主要联系方式.
Email: sammy-power96@yandex.ru
ORCID iD: 0000-0003-2029-693X
俄罗斯联邦, Москва

Сергей Лысенко

Московский государственный университет имени М.В. Ломоносова

Email: sammy-power96@yandex.ru
ORCID iD: 0009-0006-7826-2811

д.х.н.

俄罗斯联邦, Москва

Сергей Кардашев

Московский государственный университет имени М.В. Ломоносова

Email: sammy-power96@yandex.ru
ORCID iD: 0000-0003-1818-7697

к.х.н.

俄罗斯联邦, Москва

Наталья Синикова

Московский государственный университет имени М.В. Ломоносова

Email: sammy-power96@yandex.ru

к.х.н.

俄罗斯联邦, Москва

Сергей Егазарьянц

Московский государственный университет имени М.В. Ломоносова

Email: sammy-power96@yandex.ru
ORCID iD: 0000-0001-9160-4050

д.х.н.

俄罗斯联邦, Москва

Антон Максимов

Московский государственный университет имени М.В. Ломоносова; Институт нефтехимического синтеза им. А.В. Топчиева РАН

Email: sammy-power96@yandex.ru
ORCID iD: 0000-0001-9297-4950

д.х.н., чл.-корр. РАН

俄罗斯联邦, Москва; Москва

Эдуард Караханов

Московский государственный университет имени М.В. Ломоносова

Email: sammy-power96@yandex.ru
ORCID iD: 0000-0003-4727-954X

д.х.н., профессор

俄罗斯联邦, Москва

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2. Fig. 1. Nitrogen adsorption-desorption isotherms (a) and pore size distribution (b) of the catalysts: FCC-cat - fresh, FCC-cat-TPO - after thermocouple treatment, 2Ni3V-FCC-cat - after deactivation of 2000 ppm Ni and 3000 ppm V; 4Ni6V-FCC-cat - after deactivation of 4000 ppm Ni and 6000 ppm V; 4Ni6V-5B-FCC-cat - after passivation 4000 ppm Ni and 6000 ppm V; 4Ni6V-FCC-cat-cycle - after deactivation 4000 ppm Ni and 6000 ppm V and 5 cracking regeneration cycles

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3. Fig. 2. Diffractograms of industrial cracking catalysts: (a) fresh; (b) after thermocouple treatment; (c) after decontamination of 2000 ppm Ni and 3000 ppm V; (d) after decontamination of 4000 ppm Ni and 6000 ppm V; (e) after decontamination of 6000 ppm V; (f) after passivation of 4000 ppm Ni and 6000 ppm V; g) after 6000 ppm V passivation; h) after 4000 ppm Ni and 6000 ppm V deactivation and five cracking regeneration cycles; i) after 4000 ppm Ni and 6000 ppm V passivation and five cracking regeneration cycles; ii) after 4000 ppm Ni and 6000 ppm V passivation and five cracking regeneration cycles

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4. Fig. 3. SEM images, elemental mapping and EDS spectra of catalysts after thermocouple treatment (a, b) and (c, d), after deactivation with 4000 ppm Ni and 6000 ppm V (e, f), (g, h, i, j) and (k), after passivation with 4000 ppm Ni and 6000 ppm V (l, m), (n, o, p, q) and (r), respectively

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5. Fig. 4. Temperature-programmed hydrogen reduction curves of industrial cracking catalysts: (a) after deactivation and passivation of 6000 ppm V; (b) after deactivation and passivation of 4000 ppm Ni; (c) after deactivation and passivation of 4000 ppm Ni and 6000 ppm V

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6. Fig. 5. IR spectra of cracking catalysts: FCC-cat, fresh; FCC-cat-TPO, after thermocouple treatment; 2Ni3V-FCC-cat, after deactivation with 2000 ppm Ni and 3000 ppm V; 4Ni6V-FCC-cat, after deactivation with 4000 ppm Ni and 6000 ppm V; 4Ni6V-5B-FCC-cat, after passivation with 4000 ppm Ni and 6000 ppm V

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7. Fig. 6. 11B NMR spectrum of the catalyst after passivation with 4000 ppm Ni and 6000 ppm V

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8. Fig. 7. Process characteristics of catalytic cracking of hydrotreated gas oil on MAT unit in the presence of deactivated 2000 ppm vanadium and 3000 ppm nickel (2Ni3V-FCC- cat) and 4000 ppm vanadium and 6000 ppm nickel (4Ni6V-FCC-cat) catalysts and catalysts after passivation with boron-containing additives in the amount of 3000 (2Ni3V-3B-FCC-cat) and 5000 (4Ni6V-5B-FCC-cat) ppm in terms of boron

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9. Fig. 8. Cracking product yields of hydrotreated vacuum gas oil in the presence of catalysts after deactivation with 4000 ppm nickel and 6000 ppm vanadium (4Ni6V-FCC-cat), after passivation with 4000 ppm nickel and 6000 ppm vanadium (4Ni6V-5B-FCC-cat) as a function of the number of cracking regeneration cycles

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