Nonoxidative conversion of methane and n-pentane over a platinum/alumina catalyst

被引：10

作者：

Golinskii, D. V. ^{[1
]}

Vinichenko, N. V. ^{[1
,2
]}

Pashkov, V. V. ^{[1
]}

Udras, I. E. ^{[1
]}

Krol', O. V. ^{[1
]}

Talzi, V. P. ^{[1
]}

Belyi, A. S. ^{[1
,2
]}

机构：

[1] Russian Acad Sci, Inst Hydrocarbons Proc, Siberian Branch, Omsk 644040, Russia

[2] Omsk State Tech Univ, Omsk 644050, Russia

来源：

KINETICS AND CATALYSIS | 2016年 / 57卷 / 04期

关键词：

methane; n-pentane; isotope-ratio mass spectrometry; aromatic hydrocarbons; ISOTHERMAL 2-STEP REACTION; OXYGEN-FREE CONVERSION; HIGHER ALKANES; ACTIVATION; CHEMISORPTION; EUROPT-1;

D O I：

10.1134/S0023158416040042

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Methane adsorption on the Pt-H/Al2O3 and Pt/Al2O3 catalysts begins at D cent = 475A degrees C and is accompanied by the appearance of hydrogen in the reaction medium. At a higher temperature is raised to 550A degrees C, the amount of adsorbed hydrogen increases to 1.1 and 0.8 mol/(mol Pt), respectively. According to the calculated degree of methane dehydrogenation on platinum sites at D cent = 550A degrees C, the De/C ratio is 1.3 (at/at) for the Pt-H/Al2O3 catalyst and 1.5 (at/at) for the Pt/Al2O3 catalyst. The introduction of n-pentane into the reaction medium increases the yield of aromatic hydrocarbons (benzene and toluene) by a factor of 8.8 over the arene yield observed in individual n-pentane conversion. A mass spectrometric analysis of the arenes obtained with the Pt/Al2O3 catalyst has demonstrated that 37.5% of the adsorbed methane is involved in the methane-n-pentane coaromatization yielding benzene and toluene.

引用

页码：504 / 510

页数：7

共 18 条

[1]

Amagirlio A., 1995, CATAL TODAY, V25, P113

[2]

[Anonymous], 1985, TERMODINAMIKA KHIMIC

[3] Improvement of methane activation using n-hexane as co-reactant over Zn/HZSM-11 zeolite [J].

Anunziata, OA ;

Mercado, GG ;

Pierella, LB .

CATALYSIS COMMUNICATIONS, 2004, 5 (08) :401-405

[4] Oxygen-free conversion of methane to higher alkanes through an isothermal two-step reaction on platinum (EUROPT-1) .1. Chemisorption of methane [J].

Belgued, M ;

Amariglio, A ;

Pareja, P ;

Amariglio, H .

JOURNAL OF CATALYSIS, 1996, 159 (02) :441-448

[5] Oxygen-free conversion of methane to higher alkanes through an isothermal two-step reaction on ruthenium [J].

Belgued, M ;

Amariglio, A ;

Lefort, L ;

Pareja, P ;

Amariglio, H .

JOURNAL OF CATALYSIS, 1996, 161 (01) :282-291

[6] Oxygen-free conversion of methane to higher alkanes through an isothermal two-step reaction on platinum (EUROPT-1) .2. Hydrogenation of the adspecies resulting from the chemisorption of methane [J].

Belgued, M ;

Amariglio, A ;

Pareja, P ;

Amariglio, H .

JOURNAL OF CATALYSIS, 1996, 159 (02) :449-457

[7]

[Белый А.С. Belyi A.S.], 2007, [Российский химический журнал, Rossiiskii khimicheskii zhurnal], VLI, P38

[8]

Belyi A. S., 2002, THESIS

[9] O-2-ADSORPTION AND (O-2-H-2)-TITRATION ON ELECTRON PLATINUM IN REFORMING CATALYSTS [J].

BELYI, AS ;

KIRYANOV, DI ;

SMOLIKOV, MD ;

ZATOLOKINA, EV ;

UDRAS, IE ;

DUPLYAKIN, VK .

REACTION KINETICS AND CATALYSIS LETTERS, 1994, 53 (01) :183-189

[10] Adsorption of methane on the Pt/Al2O3catalyst. Studying of reactionary activity of the adsorbed methane forms in reaction of joint transformation with N pentane [J].

Golinsky, D. V. ;

Ostanina, N. V. ;

Ovcharenko, A. I. ;

Pashkov, V. V. ;

Udras, I. E. ;

Beliy, A. S. .

OIL AND GAS ENGINEERING (OGE-2015), 2015, 113 :13-18

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