Selective oxidation of propane on MgO/γ-Al2O3-supported molybdenum catalyst:: influence of promoters

被引：50

作者：

Abello, MC ^{[1
]}

Gomez, MF ^{[1
]}

Cadus, LE ^{[1
]}

机构：

[1] UNSL, CONICET, Inst Invest Tecnol Quim, INTEQUI, RA-5700 San Luis, Argentina

来源：

CATALYSIS LETTERS | 1998年 / 53卷 / 3-4期

关键词：

oxidehydrogenation of light paraffins; propane oxidation; redox and acid-base properties; promoters; molybdenum catalyst;

D O I：

10.1023/A:1019074310161

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：

The influence of promoters, potassium and samarium, on molybdenum supported over MgO-gamma-Al2O3 catalyst has been investigated in the oxidative dehydrogenation of propane. The acidities of catalysts were determined by temperature-programmed desorption of NH3 and by decomposition of 2-propanol. The K-promoted catalyst showed the lower acidity followed by the Sm, whereas the unpromoted sample showed the highest acidity. The higher the acid character of the catalyst, the lower the selectivity to propene. Redox properties determined from EPR spectra change with the addition of the promoter. A parallelism between Mo6+ reducibility and catalytic activity was found.

引用

页码：185 / 192

页数：8

共 25 条

[1] Oxidative dehydrogenation of of propane over molybdenum supported on MgO-gamma-Al2O3 [J].

Abello, MC ;

Gomez, MF ;

Cadus, LE .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1996, 35 (07) :2137-2143

[2] PREPARATION, CHARACTERIZATION, AND CATALYTIC PROPERTIES OF VAPO-5 FOR THE OXYDEHYDROGENATION OF PROPANE [J].

BLASCO, T ;

CONCEPCION, P ;

NIETO, JML ;

PEREZPARIENTE, J .

JOURNAL OF CATALYSIS, 1995, 152 (01) :1-17

[3] Oxidative dehydrogenation of propane over Mg-Mo-O catalysts [J].

Cadus, LE ;

Abello, MC ;

Gomez, MF ;

Rivarola, JB .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1996, 35 (01) :14-18

[4] Synergy effects in the oxidative dehydrogenation of propane over MgMoO4MoO3 catalysts [J].

Cadus, LE ;

Gomez, MF ;

Abello, MC .

CATALYSIS LETTERS, 1997, 43 (3-4) :229-233

[5] Catalytic synergy in the oxidative dehydrogenation of propane over MgVO catalysts [J].

Carrazan, SRG ;

Peres, C ;

Bernard, JP ;

Ruwet, M ;

Ruiz, P ;

Delmon, B .

JOURNAL OF CATALYSIS, 1996, 158 (02) :452-476

[6] SELECTIVE OXIDATIVE DEHYDROGENATION OF PROPANE OVER V-MG-O CATALYSTS [J].

CHAAR, MA ;

PATEL, D ;

KUNG, HH .

JOURNAL OF CATALYSIS, 1988, 109 (02) :463-467

[7] SELECTIVE OXIDATIVE DEHYDROGENATION OF BUTANE OVER V-MG-O CATALYSTS [J].

CHAAR, MA ;

PATEL, D ;

KUNG, MC ;

KUNG, HH .

JOURNAL OF CATALYSIS, 1987, 105 (02) :483-498

[8] On the influence of the acid-base character of catalysts on the oxidative dehydrogenation of alkanes [J].

Concepcion, P ;

Galli, A ;

Nieto, JML ;

Dejoz, A ;

Vazquez, MI .

TOPICS IN CATALYSIS, 1996, 3 (3-4) :451-460

[9] THE EFFECT OF POTASSIUM ON THE SELECTIVE OXIDATION OF N-BUTANE AND ETHANE OVER AL2O3-SUPPORTED VANADIA CATALYSTS [J].

GALLI, A ;

NIETO, JML ;

DEJOZ, A ;

VAZQUEZ, MI .

CATALYSIS LETTERS, 1995, 34 (1-2) :51-58

[10] EFFECT OF COEXISTENCE OF MAGNESIUM VANADATE PHASES IN THE SELECTIVE OXIDATION OF PROPANE TO PROPENE [J].

GAO, XT ;

RUIZ, P ;

XIN, Q ;

GUO, XX ;

DELMON, B .

JOURNAL OF CATALYSIS, 1994, 148 (01) :56-67

← 1 2 3 →