Hydrotreatment of diesel feedstock over Pt-SAPO-31 catalyst: from lab to pilot scale

Kikhtyanin, Oleg; Vostrikova, L.A.; Urzhuntsev, G. A.; Toktarev, Alexander V.; Tselyutina, M. I.; Reznichenko, I. D.; Echevsky, G.V.

doi:10.1016/s0167-2991(08)80109-7

Cited by 8 publications

(5 citation statements)

References 3 publications

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“…Microporous silicoaluminophosphates (SAPO) have been reported to possess acid sites of sufficient strength to be highly selective toward hydroisomerization. Methyl isoparaffins are the predominant products obtained with Pt/SAPO-11 and Pt/SAPO-31 catalysts [30] and Pd/SAPO-31 [2]. In this case, it was possible to obtain hydrodeoxygenated and hydroisomerized liquid products over only one type of catalyst, which it would be more desirable and economical at industrial scale.…”

Section: Hydroprocessing Of Triglycerides Onlymentioning

confidence: 99%

Hydroconversion of Triglycerides into Green Liquid Fuels

Sotelo-Boyás¹,

Trejo-Zárraga²,

Hernández-Loyo³

2012

Hydrogenation

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Section: Hydroprocessing Of Triglycerides Onlymentioning

confidence: 99%

Hydroconversion of Triglycerides into Green Liquid Fuels

Sotelo-Boyás¹,

Trejo-Zárraga²,

Hernández-Loyo³

2012

Hydrogenation

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“…The preparation of SAPO-based catalysts for HIS applications was described elsewhere. − The Pt/SAPO-11 catalysts were the most frequently studied catalysts using n -alkanes ranging from n -C 4 to n -C 18 as model compounds . For example, optimal conditions during preparation of Pt/SAPO-11 catalysts with the highest activity for the HIS of dodecane were identified by Kim et al This included the optimal pore size distribution and concentration of Brønsted acidic sites.…”

Section: Hydroprocessing Of Tight Oil Feedsmentioning

confidence: 99%

Properties of Tight Oils and Selection of Catalysts for Hydroprocessing

Furimsky¹

2015

Energy Fuels

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Tight oils (TOs) occurring in low-permeability formations are produced by the fracking method. The content of atmospheric distillates (AD) may approach 80% of the TO crude, while that of vacuum residue may be as low as 5%. A waxy behavior of TOs results from a high content of n-paraffins. Blending of TOs and/or TO-derived feeds requires attention because of compatibility issues. Safety precautions must be taken during all stages of the TO handling because of a high content of C1–C4 hydrocarbons. Hydroprocessing (HPR) of naphtha from TOs is necessary to increase octane number and that of middle distillates to attain cold flow properties of diesel fuel. HPR of atmospheric residue (AR) from TOs yields additional naphtha and middle distillate feeds. Because of a great variability in properties, the pre-HPR of TO feeds may be necessary. Hydroisomerization (HIS) is the principal reaction during the HPR of AD feeds, while hydrocracking (HCR) and ring opening (RO) are the principal reactions during the HPR of AR from TOs. A wide range of catalyst formulations has been evaluated for conversion of model compounds typical of those present in TOs. High paraffinic feeds such as syncrude from Fischer−Tropsch (FT) synthesis and wax from dewaxing of base oil were tested as well. Bifunctional catalysts comprising acidic supports and noble metals were tested for HIS, HCR, and RO reactions. Conventional HPR catalysts have limited applications because of a low content of sulfur in TO feeds.

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“…In industrial isodewaxing of diesel fuels and oils with cat alysts of this type, however, the feedstock can obtain substantial amounts of sulfur and nitrogen contain ing compounds, which are catalytic poisons and can significantly affect the characteristics of the process. The effects of these compounds on the characteristics of operation of the hydroisomerization catalysts of paraffins C 7+ were studied in [83,88,89], which showed that the addition of sulfur and nitrogen com pounds to feedstock led to a considerable decrease in the activity and selectivity of platinum catalysts based on the SAPO 11, SAPO 31, SAPO 41, and MgAPSO 31 catalysts. The addition of sulfur com pounds (1000 ppm) to feedstock of hydroisomeriza tion led to a decrease in the activity and selectivity of the Pt/MgAPSO 31 catalyst (Fig.…”

Section: Zeolite Synthesis Gelationmentioning

confidence: 99%

Hydroisomerization of long-chain paraffins: Mechanism and catalysts. Part I

Nikiforov¹,

Фадеев²,

Loginova³

et al. 2015

Catal. Ind.

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A review of the literature on the catalysts of hydroisomerization of long chain paraffins is pre sented. Part I describes the mechanisms of paraffin hydroisomerizations and presents an analysis of data on the catalysts of hydroisomerization based on zeolites of various types. Part II is devoted to catalysts based on structured mesoporous materials, partially reduced molybdenum oxides and oxycarbides, and mixtures of tungsten and zirconium oxides. Industrial catalysts that have found use in isodewaxing of diesel fuels and oils are described.

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Hydrotreatment of diesel feedstock over Pt-SAPO-31 catalyst: from lab to pilot scale

Cited by 8 publications

References 3 publications

Hydroconversion of Triglycerides into Green Liquid Fuels

Hydroconversion of Triglycerides into Green Liquid Fuels

Properties of Tight Oils and Selection of Catalysts for Hydroprocessing

Hydroisomerization of long-chain paraffins: Mechanism and catalysts. Part I

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