Step Changes and Deactivation Behavior in the Continuous Decarboxylation of Stearic Acid

被引：40

作者：

Madsen, Anders Theilgaard ^{[1
,2
]}

Rozmyslowicz, Bartosz ^{[1
]}

Simakova, Irina L. ^{[1
,3
]}

Kilpio, Teuvo ^{[1
]}

Leino, Anne-Riikka ^{[4
]}

Kordas, Krisztian ^{[4
]}

Eranen, Kari ^{[1
]}

Maki-Arvela, Paivi ^{[1
]}

Murzin, Dmitry Yu. ^{[1
]}

机构：

[1] Abo Akad Univ, Proc Chem Ctr, Biskopsgatan 8, FI-20500 Turku, Finland

[2] Tech Univ Denmark, Ctr Catalysis & Sustainable Chem, DK-2800 Lyngby, Denmark

[3] Boreskov Inst Catalysis, Novosibirsk 630090, Russia

[4] Univ Oulu, Lab Microelect & Mat Phys, Oulu 90014, Finland

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2011年 / 50卷 / 19期

关键词：

CATALYTIC DEOXYGENATION; VEGETABLE-OILS; FATTY-ACIDS; PALM OIL; MESOPOROUS CARBON; BIOFUEL PRODUCTION; ALIPHATIC ESTERS; DIESEL FUEL; BIODIESEL; PD;

D O I：

10.1021/ie201273n

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Deoxygenation of dilute and concentrated stearic acid over 2% Pd/C beads was performed in a continuous reactor at 300 degrees C and 20 bar pressure of Ar or 5% H-2/Ar. Stable operation was obtained in 5% H-2 atmosphere, with 95% conversion of 10 mol % dilute stearic acid in dodecane and 12% conversion of pure stearic acid. Deactivation took place in H-2-deficient gas atmosphere, probably as a result of the formation of unsaturated products and coking in the pore system. Transient experiments with step changes were performed: 1 h was required for the step change to be visible in liquid sampling, whereas steady states were achieved after a total of 2.5-3 h. Postreaction analysis of the spent catalyst revealed that a deactivation profile was formed downward over the catalyst bed.

引用

页码：11049 / 11058

页数：10

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