Abstract
Thermostable oxide catalysts (Al 2 O 3 , ZrO 2 , MgO and CaO) supported on a resistible material (carborundum) were studied in oxygen-free pyrolysis of methane. Addition of MgO, ZrO 2 and Al 2 O 3 to pure carborundum resulted in a considerable increase in the methane conversion and in the selectivity to acetylene. In contrast, addition of CaO led, in general, to a decrease in the activity of the supported catalysts. The maximal selectivity to acetylene (23.6 %) was observed with the catalyst MgO/SiC at the conversion of methane equal to 68 % at 1290 °C. Studies of the sample of MgO/SiC showed that the catalyst retained its catalytic properties for methane pyrolysis (pyrolysis of 15 % of CH4 in nitrogen; methane conversion ca. 69 %, selectivity to acetylene ca. 22 %) during more than 4 hours at 1300 °C and was not destroyed due to the absence of carbon corrosion of the resistible support (carborundum) in contrast to the metal catalysts.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
