Preparation of nanoporous alumina using aluminum chloride via precipitation templating method for CO adsorbent

Effects of the Crystalline Properties of Hollow Ceria Nanostructures on a CuO-CeO2 Catalyst in CO Oxidation

“…There are several methods for removing toxic CO that have been evaluated in both fundamental and practical engineering studies. The major approaches are based on adsorption, thermal combustion, and catalytic oxidation [ 9 , 10 , 11 , 12 , 13 , 14 ]. Although adsorption is the simplest and most extensively studied method for CO removal, adsorption saturation is easily achieved, as the adsorption column becomes larger since conventional adsorbents have a low affinity and small adsorption capability toward CO [ 9 , 10 ].…”

New Insights into SnO2/Al2O3, Ni/Al2O3, and SnO2/Ni/Al2O3 Composite Films for CO Adsorption: Building a Bridge between Microstructures and Adsorption Properties

“…Several studies have substituted adsorption for filtration owing to the low cost, facility, and less noxious secondary production. , Apart from commercial adsorbents including activated carbon (AC), ,, zeolites, , and silica, , several nanoporous adsorbents such as metal–organic frameworks, , mesoporous silica (MS), , and mesoporous alumina (MA) have gained a large attention in the field because of their porous structure, pore size distribution, wall thickness, and particular surface area. , Extreme porosity and surface development have made MS ideal 3-dimensional nanoadsorbents . It turns out, however, that MA structures are even more effective for CO gas removal than MS. ,,, …”

“…13,14 Extreme porosity and surface development have made MS ideal 3-dimensional nanoadsorbents. 13 It turns out, however, that MA structures are even more effective for CO gas removal than MS. 1,13,15,16 Cubic γ-Al 2 O 3 is a metastable alumina polymorph with specific properties related to the surface chemical compound, crystalline structure, and phase contribution which made it a major catalyst for CO capture. 17−19 Other factors that affect CO adsorption are surface defect density and surface area; 20 therefore, even small amounts of dopants improve the performance of nanoadsorbents because of the modification of microstructures and surface structures.…”

A new kinetic models analysis for CO adsorption on palladium zeolite nanostructure by roll-coating technique

“…However, its disadvantages such as lack of low thermal and mechanical stability rather than other materials should not be ignored [6]. Recently, varieties of nonporous including metal-organic frameworks (MOFs) [20][21][22][23], mesoporous alumina (MA) [24,25], and mesoporous silica (MS) [26,27] have been used for detection and adsorption of toxic gases, and are regarded as alternatives to commercial adsorbents [28,29]. Metal-organic frameworks (MOFs) are confirmed to be a significant adsorbent due to its unique properties such as large specific surface area, ultra-high porosities, controllable architectures, and low density [30,31].…”