Über die Bildung von Methylalkohol bei der partiellen Oxydation von Methan und Äthylen unter hohem Druck

Pichler, H.; Reder, Rolf

doi:10.1002/ange.19330461102

Cited by 21 publications

(13 citation statements)

References 3 publications

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“…The methane conversion at the above conditions was only 1.9%. Similar results were reported by Pichler and Reder (1933) and Wiezevich and Frolich (1934). Brockhaus and Franke (1979) from their studies on partial oxidation of methane under cool flame conditions were able to obtain a combined selectivity of methanol and formaldehyde up to 91%.…”

Section: Discussionsupporting

confidence: 92%

“…Much of the earlier work on the partial oxidation of methane has been conducted in static reactors (Newitt and Haffner, 1932;Lott, 1965). Limited studies have been performed employing flow reactors at high pressures (Newitt and Szego, 1934;Pichler and Reder, 1933; Wiezevich and Frolich, 1934). Boomer and Broughton (1937) and Boomer and Thomas (1937a,b) showed that at a pressure of 180 atm, temperature of 475 °C, and 3.2% oxygen concentration in the feed gas, a maximum methanol selectivity of 74% could be obtained.…”

Section: Discussionmentioning

confidence: 99%

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Direct conversion of methane to methanol in a flow reactor

Yarlagadda¹,

Morton²,

Hunter³

et al. 1988

Ind. Eng. Chem. Res.

104

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Direct conversion of methane to methanol in a flow reactor

Yarlagadda¹,

Morton²,

Hunter³

et al. 1988

Ind. Eng. Chem. Res.

104

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“…The first published results in the field of the partial oxidation of methane were experiments carried out in static reactors (Newitt and Haffner, 1932;Pichler and Reder, 1933) at pressures of up to 160 bar and temperatures ranging from 350 to 400 "C with residence times of up to 140 min. used in the various studies, it is necessary to outline briefly the origin of the data compared.…”

Section: Discussionmentioning

confidence: 99%

Partial oxidation of methane to methanol in a flow reactor at elevated pressure

Rytz¹,

Baiker²

1991

Ind. Eng. Chem. Res.

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The partial oxidation of methane was carried out in a glass-lined tubular flow reactor packed with quartz chips. Experiments were performed a t pressures of 2&50 bar, temperatures of 425-500 "C, space times of 3-12 s, and oxygen concentrations in the feed of 3,5, and 10 mol %. Reaction produds observed were methanol, carbon monoxide, and water with small amounts of carbon dioxide, ethylene, and formaldehyde. Depending on the experimental conditions, selectivities to methanol of up to 50% could be reached with methane conversions of 3-4%. At higher conversion levels of 14% the selectivity to methanol dropped to 30%. Low temperature and high pressure were found to favor methanol production. Increase of the oxygen concentration in the reactant feed increases the yield but lowers the selectivity to methanol.

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“…(2) CH30-+ 02 -* CH20 + H02-(20 CH30--CH20 + H-(3) CH4 + -OH (4) CH4 + H02--(5) CH20 + -OH - (6) CH20-+ H02-(7) CH20 + 02 - 1013 exp(-30000/RT) 10~10 exp(-8500/RT) 10"10 exp(-23 000/RT) 1.6 x 10'lal exp(-2500/RT) 1.9 x 10'11 exp(-13 000/RT) 7.5 x 10'11 exp(-41000/RT) lO'13 (9) H202 + M --20Hc + M 7 = 2.83 x 10'7 exp(-46 300/RT) (10) CH302-+ CH4 -CH3OOH + -CH3 k10 = 10'10 exp(-19700/RT) (11) CH302-+ CH20 -CH3OOH + -CHO kn = 10-13 (12) CH3OOH -CH30-+ -OH kl2 = 1012-65 exp(-40500/RT) (13) CH302-+ H02--CH3OOH + 02 7a = 1.6 X 10'115 (130 CH302-+ CH302--2CH30-+ 02 73. = 1.75 x 10'13 (14) CHsO-+ CH4 -CH3OH + -ch3 74 = lO'12,2 exp(-ll 000/RT) (15) CH30-+ CHsO -CH3OH + -CHO 75 = 1.6 X 10'14 4 exp(-3000/RT) ( 16) CO + -OH -C02 + -H 7e = 1.6 X 10125 exp(-810/RT) (17) CO + H02--* C02 + -OH kl2 = 2.2 x 10'10 exp(~23 000/RT) (18) H-+ CH20 -H2 + -CHO 7s = 1.6 x lO'1008 exp(-4330/RT) (19) H-+ CH4 -H2 + -CH3 7 = 5X 10"9 exp(-ll 900/R70 (20) H-+ O, + M -H02-+ M 7o = lO'32 (21) ho2-72H20 + 3/4o2 7i -1 (22) H02-+ H02--H202 + 02 !!…”

Section: B Mechanismsmentioning

confidence: 99%