Assessment of CO2 capture options from various points in steam methane reforming for hydrogen production

CO2 chemisorption and evidence of the CO oxidation–chemisorption mechanisms on sodium cobaltate

“…[25][26][27][28][29][30] For example, in steam reforming (SR), the H 2 /CO ratio can be varied by manipulating the relative concentrations of CO 2 and O 2 in the feed, which can be achieved via selectively adsorbing the co-generated CO 2 on a proper and effective sorbent and/or by carbon monoxide oxidation [31]. A typical sorbent has specific characteristics, including (i) selective sorption of CO 2 at the process temperature and in presence of steam, CH 4 , CO, and H 2 , (ii) adequate working CO 2 capacity at the process operational temperature, (iii) adequate rates of sorption and desorption, and (iv) adequate thermal and cyclic stability under the process conditions.…”

“…In general, these materials require a support, such as zeolites and Al 2 O 3 , which complicates their preparation and increases the cost. In addition, the catalytic activity is reduced by contamination due to carbon deposition on the catalyst surface [31,[33][34][35][36].…”

How fracking is upending the chemical industry

“…First commercialized in the 1930s, this involves smashing methane and water together at up to 1,100 °C, over a metal catalyst. It produces an extremely useful mixture of carbon monoxide and hydrogen called syngas -and also emits several hundred million tonnes of carbon dioxide per year, accounting for roughly 3% of all industrial emissions 3 .…”

The Effect of Sc Promoter on the Performance of Co/TiO2–P25 Catalyst in Dry Reforming of Methane

“…3,4 Currently, the majority of hydrogen is produced via reforming of hydrocarbons (e.g., natural gas and naphtha) and from coal gasification. [5][6][7] As the need for alternative energy resources is increasing owing to the exhaustion of crude oil supplies, methane (a major constituent of natural gas) has attracted much consideration because its existing reserves globally are significantly larger than crude oil. 8 In view of this, reforming of methane is still considered a primary and efficient pathway to produce hydrogen.…”

“…5,9,10 However, according to the recent scenario of global warming, dry reforming of methane (DRM) has attracted special attentions in comparison to other reforming processes, because this process not only utilizes and/or mitigates two undesirable greenhouse gases (i.e., CO 2 and CH 4 ) but also produces syngas (a mixture of CO and H 2 ) with more preferable H 2 /CO molar ratios for production of valuable synthetic liquid hydrocarbons and oxygenated chemicals through Oxo-and Fischer-Tropsch synthesis processes. [11][12][13] In addition, DRM is also practically applicable and feasible for other hydrocarbons, which have very high content of methane and carbon dioxide such as biogas, a renewable resource consisting of CH 4 (40-70%) and CO 2 (30-60%).…”