Selectivity Reversal in Oxidative Dehydrogenation of Ethane with CO2 on CaO–NiO/Al2O3 Catalysts

Development of Potassium- and Sodium-Promoted CaO Adsorbents for CO2 Capture at High Temperatures

“…The presence of these CaCO 3 characteristic peaks are also noticeable in the spectrum of bare CaO after CO 2 adsorption (Figure S3, Supporting Information). The bands at 1072 and 858 cm –1 represent symmetric stretching and out-of-plane bending modes of the carbonate ion, respectively, whereas the peak at 713 cm –1 represents in-plane bending mode of the carbonate ion . Moreover, the broad peak at 1484 cm –1 corresponds to stretching vibrations of C–O bonds, whereas the peaks at 1798 and 3641 cm –1 are assigned to CO and O–H bonds, respectively …”

Oxidative Dehydrogenation of Ethane with CO2 over the Fe-Co/Al2O3 Catalyst: Experimental Data Assisted AI Models for Prediction of Ethylene Yield

“…Ethylene is one of the most important raw materials used in the production of a wide variety of chemical compounds such as polyethylene, ethylbenzene, acetaldehyde, ethylene oxide, and other derivates . Conventionally, ethylene is produced through steam cracking of alkane or naphtha.…”

“…An extensive literature review has been performed on ODHE-CO 2 , and the summary is given in Table . It can be observed from the table that several active metals such as Cr-based, − Ga-based, ,, Ni-based, Au-based, , Fe-based, Co-based, Ce-based, and Mo-based catalysts and also mixed with promotors − supported on various metal oxides such as SiO 2 , ZrO 2 , TiO 2 , MgO, Al 2 O 3 , etc., were tested for ODHE-CO 2 . Nakagawa et al were among the first to perform the ODHE-CO 2 using Ga-based and Cr-based catalysts and achieved the maximum ethylene yields ( Y C2H4 ) of 20 and 10%, respectively, in comparison to the 2–3% yield achieved without the catalyst at a temperature and molar ratio of CO 2 /C 2 H 6 and GHSV of 650 °C and 5 and 9000 L/kg cat ·h, respectively.…”

“…Ethylene is one of the most important raw materials used in the production of a wide variety of chemical compounds such as polyethylene, 1 ethylbenzene, 2 acetaldehyde, 3 ethylene oxide, 4 and other derivates. 5 Conventionally, ethylene is produced through steam cracking of alkane or naphtha. This process is highly endothermic and energy-intensive, and it also suffers from rapid coke formation and contributes to the emission of CO 2 into the atmosphere.…”

“…An extensive literature review has been performed on ODHE-CO 2 , and the summary is given in Table 1. It can be observed from the table that several active metals such as Cr-based, 11−13 Ga-based, 8,14,15 Ni-based, 5 Aubased, 16,17 Fe-based, 18 Co-based, 19 Ce-based, 20 and Mobased 21 catalysts and also mixed with promotors 22−25 supported on various metal oxides such as SiO 2 , ZrO 2 , TiO 2 , MgO, Al 2 O 3 , etc., were tested for ODHE-CO 2 . Nakagawa et al 26 27,28 while for the Ga-based catalyst, it was below 30% 8,15 in the temperature range of 650−700 °C.…”