| Title |
Synergistic energy-efficient capture of VOCs and metal-free catalytic conversion using magneto-inductive Guefoams: Proof-of-concept in n-hexane-enriched nitrogen streams |
| ID_Doc |
9894 |
| Authors |
Verdú, N; Molina, JM |
| Title |
Synergistic energy-efficient capture of VOCs and metal-free catalytic conversion using magneto-inductive Guefoams: Proof-of-concept in n-hexane-enriched nitrogen streams |
| Year |
2024 |
| Published |
|
| DOI |
10.1016/j.jhazmat.2024.134872 |
| Abstract |
Addressing contemporary environmental and health concerns requires reducing pollutant emissions and converting them into less harmful or valuable compounds within the framework of the circular economy. Guefoam materials offer a promising solution by enabling the capture and pre-concentration of volatile organic compounds (VOCs), while facilitating the structuring of active phases for heterogeneous catalytic conversions. This study demonstrates the benefits of merging two newly designed electromagnetic induction-assisted ceramic matrix Guefoams into a portable integrated unit, synergizing the pre-concentration and chemical transformation of n-hexane, a VOC with special challenges. One Guefoam serves as an adsorbent, whereas the other plays a catalytic role. These Guefoams host guest phases, which consist of composite materials combining a steel core with magneto-inductive properties encased in a highly porous carbonaceous layer. This carbonaceous material undertakes a dual mission: adsorbing n-hexane from a nitrogen stream within the adsorptive Guefoam and, upon phosphorus doping in the catalytic Guefoam, orchestrating the metal-free selective dehydroaromatization of nhexane into benzene. The design and integration of these novel Guefoam materials into a unified functional entity prove highly effective in pre-concentrating (enrichment factors up to 275) and catalyzing n-hexane with up to 84 % conversion and 94 % benzene selectivity while remaining energy -efficient and environmentally sustainable. |
| Author Keywords |
Guefoam; N-hexane; Metal-free catalysis; Adsorption; Induction |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001255136900001 |
| WoS Category |
Engineering, Environmental; Environmental Sciences |
| Research Area |
Engineering; Environmental Sciences & Ecology |
| PDF |
https://doi.org/10.1016/j.jhazmat.2024.134872
|