Direct synthesis of LPG from carbon dioxide over hybrid catalysts comprising modified methanol synthesis catalyst and B-type zeolite
Abstract
Hydrogenation of carbon dioxide to C3 and C4 paraffins (LPG) was studied by using hybrid catalysts composed of Zr-modified Cu–Zn catalyst with Pd-modified zeolite. Various factors that affect catalyst activity, including reaction temperature, space velocity, pressure, and the ratio of H2 to CO2 were investigated thoroughly. The hybrid catalysts exhibited stable activity over 100 h and extraordinary high selectivity of LPG synthesis (especially iso-butane) even under low temperature (260◦C) and low pressure (2 MPa). Conversion of CO2 and the yield of hydrocarbon reached 25.2% and 13.3%, respectively, while keeping the selectivity of LPG and CH4 75% and 1%, respectively. The iso-butane/n-butane ratio was about 16/1, whose value was much higher than that of thermodynamic equilibrium (about 1/1).
Reference
Congming Li, Xingdong Yuan, Kaoru Fujimoto (2014). Direct synthesis of LPG from carbon dioxide over hybrid catalysts comprising modified methanol synthesis catalyst and B -type zeolite. Applied Catalysis A: General, 475, 155–160.
Results and findings
- Hybrid catalysts consisting of Zr modified Cu–Zn catalyst with Pd-modified zeolite were found to show high and stable conversion for CO2 hydrogenation.
- The stable activity of CO2 conversion can be attributed to the high water resistant of CZZA.
-The hybrid catalyst consisting of CZZA with Pd-B was effective for LPG synthesis with selectivity as high as 75% and with little methane formation.
- The Catalytic activity was stable over 100 h.
Citations
- Congming Li, Xingdong Yuan, Kaoru Fujimoto (2014) reported that The conversion carbon dioxide to LPG over B-type zeolite catalyst (155-160).
- According to Congming Li, Xingdong Yuan, Kaoru Fujimoto (2014), Direct synthesis of LPG from carbon dioxide by using hybrid catalysts comprising modified methanol synthesis B- type zeolite catalyst (155-160).
Commentary on Friend' blogs:
ตอบลบ1# FaiThanya.blogspot.com
http://faithanya.blogspot.com/2015/01/assignment1-citation.html?showComment=1421851434951#c1801590713507223620
Commentary on Friend' blogs:
ตอบลบ2# tossapolbu.blogspot.com
http://tossapolbu.blogspot.com/2015/01/assignment1-citation.html?showComment=1421851726458#c7617289813226130104
I think this article "Bimetallic Fe–Co catalysts for CO2 hydrogenation to higher hydrocarbons" in Journal of CO2 Utilization will be useful to you in your dissertation.
ตอบลบSome Highlight:
Bimetallic Fe–Co catalysts has high effective and selective for CO2 hydrogenation to hydrocarbons (Satthawong, Koizumi, Song, & Prasassarakich, 2013).
Please Follow this link to download:
http://www.sciencedirect.com/science/article/pii/S2212982013000498
Thank you Faii :)
ลบHi, Panya :)
ตอบลบI have a question for asking you.
I would like to know what is the hybrid catalyst and how does it differ from common catalyst.
Thank you! :')
I understand that the hybrid catalyst is two metal over support but common catalyst that some catalyst not have support and some catalyst will be one metal over support.
ลบI'm not sure. thank you for question :)
Hi Panya
ตอบลบMay i have a suggestion for your reference.
The name of journal, you should use journal abbreviation and italic text.
For example: Appl. Catal., A.
P.S. I can not choose italic text in the comment box.
Thank you for your suggestion :)
ลบHi K. Panya
ตอบลบIn the citation (2) ...According to Congming Li, Xingdong Yuan, Kaoru Fujimoto (2014), Direct synthesis of LPG from carbon dioxide by using hybrid catalysts comprising modified methanol synthesis B- type zeolite catalyst (155-160)....
I think you will miss the complete sentences. I will share my ideas.
"According to Li et al. (2014), Direct synthesis of LPG from carbon dioxide by using hybrid catalysts was composed of modified methanol synthesis B- type zeolite catalyst (p.155)."
but i'm not understand in your field, so i will misunderstand in your citation, eiei.
Haha, Thank you for your suggestion :)
ลบGood start! Check the reference list citation though. That's not APA citation; remember we only use the initials of the authors' first names?
ตอบลบThank you for your suggestion :)
ลบHi, K. Panya
ตอบลบIn my opinion, when you citation, you should write the main author (just one) and put "et al." after that ka.
If you have enough time, could you please describe more about CZZA? ^^ thanks!
CZZA is C = Copper metal, Z = Zinc metal, Z = Zirconium metal and A = Alumina support.
ลบThank you for your suggestion :)
Hi, K.Panya
ตอบลบIf the references have three or over three authors, you may be use "first author" et al. and year such as Li et al. 2014 from your reference.
If you think different, you can reply me.
Fighting...na
Thank you for your suggestion :)
ลบ