Continuous Methanol Production from Methane Using N2O as Oxidant

Increased production of shale gas motivated using methane as a chemical feedstock. For this reason, an economical process that converts methane into an easily transported and valuable chemical is needed. Direct and selective, on-site, production of methanol is desirable but challenging due to the inherent stability of methane. Selective methanol formation is proven to be possible on copper exchanged zeolites (Cu-ZSM-5 [1] and Cu-mordenite [2,3]) following a 3-step cyclic process: (i) oxidation of the Cu-zeolite with O2 at relatively higher temperatures (450 °C) to create reactive copper-oxo species, (ii) methane activation at moderate temperatures (120–200 °C) and (iii) admission of a solvent to extract methanol from the surface. However, the process lacks continuous methanol production with altering temperatures requires for the 3 different steps. In this study, continuous methanol production at temperatures lower than 300 °C is reported using Cu-SSZ-13 and compared to Cu-ZSM-5 and Cu-mordenite using CH4, N2O and water vapour as reactants. The effect of CH4, N2O and H2O on methanol selectivity is also investigated. Methanol production rates as high as 55 µmol CH3OH/g/h and methanol selectivity values as high as 40% are achieved on Cu-SSZ-13 [4].


Catalytic conversion of methane to methanol on Cu-SSZ-13 using N2O as oxidant
İpek Torun, Bahar (2016-01-01)
Direct catalytic methanol production from methane is achieved on Cu-SSZ-13 zeolite catalysts using N2O as the oxidant. The methanol production rate on Cu-SSZ-13 (on a per gram basis) was more than twice the rate on Cu-mordenite and more than four times the rate on Cu-ZSM-5.
Continuous synthesis of graphite with tunable interlayer distance
ÇAKMAK, GÜLHAN; Öztürk, Tayfur (2019-06-01)
A study was carried out to produce graphite with controlled interlayer distance synthesized from methane using hydrogen as modifying agent. The synthesis was carried out in radio frequency (r.f.) thermal plasma where the methane-to-hydrogen ratio varied systematically over a wide range. The synthesized materials were investigated in terms of structure, morphology and the interlayer distance. It is found that there is a critical fraction of hydrogen, around half of that of methane flow rate, up to which it i...
Continuous supercritical carbon dioxide processing of palm oil
Ooi, CK; Bhaskar, A; Yener, Meryem Esra; Tuan, DQ; Hsu, J; Rizvi, SSH (1996-02-01)
Crude palm oil was processed by continuous supercritical carbon dioxide. The process reduces the contents of free fatty acids, monoglycerides and diglycerides, certain triglycerides, and some carotenes. The refined palm oil from the process has less than 0.1% free fatty acids, higher carotene content, and low diglycerides. Solubility of palm oil in supercritical carbon dioxide increased with pressure. A co-solvent improves the refining process of palm oil.
Analysis of carbon dioxide sequestration in shale gas reservoirs by using experimental adsorption data and adsorption models
Merey, Sukru; Sınayuç, Çağlar (2016-11-01)
For carbon dioxide (CO2) sequestration in depleted shale gas reservoirs or CO2 injection as an enhanced shale gas recovery technique, it is important to understand the adsorption mechanism in these reservoirs. In this study, experimental adsorption measurements for Dadas shale samples were conducted at 25 degrees C, 50 degrees C, and 75 degrees C up to approximately 2000 psia by using pure CO2 (maximum adsorption capacity 0.211 mmol/g at 25 degrees C) and pure methane (CH4) (maximum adsorption capacity 0.04...
Selective oxidation of H2S to elemental sulfur over Ce-V mixed oxide and CeO2 catalysts prepared by the complexation technique
Yasyerli, Sena; Dogu, Gulsen; Doğu, Timur (2006-09-30)
Selective oxidation of H2S to elemental sulfur was investigated in a fixed bed reactor using Ce-V mixed oxides and cerium oxide (CeO2) catalytic materials prepared by the complexation technique. The Ce-V mixed oxide with a V/Ce atomic ratio of one and with the CeVO4 crystal structure gave very high sulfur selectivity values (close to one) at almost complete conversion of H2S, for O-2/H2S mote ratios close to 0.5. Best operation temperature was found as 250 degrees C with this catalyst. CeO2 gave lower selec...
Citation Formats
B. İpek Torun, “Continuous Methanol Production from Methane Using N2O as Oxidant,” presented at the 7. Ulusal Kataliz Kongresi (9 - 12 Eylül 2018), Denizli, Türkiye, 2018, Accessed: 00, 2021. [Online]. Available: