Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Continuous Methanol Production from Methane Using N2O as Oxidant
Date
2018-09-12
Author
İpek Torun, Bahar
Metadata
Show full item record
Item Usage Stats
300
views
0
downloads
Cite This
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].
Subject Keywords
Methane
,
Methanol
,
Selective alkane oxidation
,
Cu-SSZ-13
URI
https://hdl.handle.net/11511/78528
https://www.pau.edu.tr/ncc7/tr/haber/kongre-kitapcigi-sitemize-yuklenmistir
Conference Name
7. Ulusal Kataliz Kongresi (9 - 12 Eylül 2018)
Collections
Department of Chemical Engineering, Conference / Seminar
Suggestions
OpenMETU
Core
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...
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...
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...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
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: https://hdl.handle.net/11511/78528.