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].
7. Ulusal Kataliz Kongresi (9 - 12 Eylül 2018)


Direct conversion of methane to methanol over iron-exchanged zeolites
Gökçe, İklim; İpek Torun, Bahar; Department of Chemical Engineering (2022-8)
Methane is the primary component of natural gas and the abundance of methane is increased with increased shale gas production. The extracted methane should be converted to more valuable, liquid products on site such as methanol, which is highly versatile and an important feedstock for many chemicals. Unlike the industrial conversion of methane to methanol, which is via an indirect and highly energy intensive route, alternative routes of direct conversion of methane to methanol at milder conditions are searc...
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 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...
Direct Methane Oxidation to Methanol by N2O on Fe- and Co-ZSM-5 Clusters with and without Water: A Density Functional Theory Study
Fellah, Mehmet Ferdi; Önal, Işık (2010-02-25)
Density functional theory (DFT) calculations were carried Out ill a Study of oxidation of methane to methanol by N2O on the Fe- and Co-ZSM-5 clusters. The catalytic cycle steps have been Studied oil model Clusters ((SiH3)(4)AlO4M) (where M = Fe, Co). Calculations indicate very low methanol selectivity Without water and increasing rate of methanol formation with water. These results are in qualitative agreement with the experimental literature. The methanol formation step is also found to be the rate-limitin...
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: