1. Catalytic cracking of biomass-derived hydrocarbon tars or model compounds to form biobased benzene, toluene, and xylene isomer mixturesAndrii Kostyniuk, Miha Grilc, Blaž Likozar, 2019 Ključne besede: biomass-derived tar compounds, catalytic cracking process, benzene/toluene/xylene, BTX, metal-promoted zeolite materials, activated carbon supports
DiRROS - Objavljeno: 23.01.2020; Ogledov: 1392; Prenosov: 942
 Celotno besedilo (2,52 MB) |
2. Catalytic hydrocracking reactions of tetralin biomass tar model compound to benzene, toluene and xylenes (BTX) over metal-modified ZSM-5 in ambient pressure reactorAndrii Kostyniuk, David Bajec, Blaž Likozar, 2022 Ključne besede: catalytic hydrocracking reactions, ring opening mechanism, model biomass tar, benzene/toluene/xylenes (BTX), metal-doped HZSM-5 zeolite material, deposited coke deactivation
DiRROS - Objavljeno: 10.03.2022; Ogledov: 162; Prenosov: 110
Celotno besedilo (5,34 MB) |
3. Study of water adsorption on EDTA-modified LTA zeolitesJanez Volavšek, O. L. Pliekhov, Olena Pliekhova, Gregor Mali, Nataša Zabukovec Logar, 2022 Ključne besede: 4A zeolite, 5A zeolite, LTA topology, water adsorption, EDTA dealumination, 27Al NMR, 29Si NMR
DiRROS - Objavljeno: 09.05.2022; Ogledov: 120; Prenosov: 76
Celotno besedilo (2,69 MB) |
4. Insight into the interdependence of Ni and Al in bifunctional Ni/ZSM-5 catalysts at the nanoscaleHue-Tong Vu, Iztok Arčon, Danilo Oliveira de Souza, Simone Pollastri, Goran Dražić, Janez Volavšek, Gregor Mali, Nataša Zabukovec Logar, Nataša Novak Tušar, 2022 Ključne besede: Ni/ZSM-5 catalysts, zeolite, Ni XANES, EXAFS
DiRROS - Objavljeno: 13.06.2022; Ogledov: 70; Prenosov: 42
Celotno besedilo (1,25 MB) |
5. Assessment of natural zeolite clinoptilolite for remediation of mercury-contaminated environmentMarina Trgo, Marin Ugrina, Mateja Gosar, Ivona Nuić, 2022 Povzetek: The soil at ancient roasting sites in the surroundings of the Idrija mine (Slovenia) is highly contaminated with mercury. To assess the impact of mercury on groundwater by infiltration and find an eco-friendly remediation method, the leaching of mercury from the soil containing 1347 mg Hg/kg, followed by sorption of the total leached mercury on cost-effective natural zeolite (NZ) clinoptilolite, was performed. The leaching of soil in ultrapure water of pHo = 3.00–11.46 after 24 h resulted in the total leached mercury concentration in the range 0.33–17.43 µg/L. Much higher concentrations (136.9–488.0 µg/L) were determined after the first few hours of leaching and were high above the maximum permissible level in water for human consumption. The NZ showed very good sorption of the total leached mercury, with a maximum removal efficiency of 94.2%. The leaching of mercury in presence of the NZ resulted in a significant decrease of the total leached mercury (1.9–20.3 µg/L compared to 12.8–42.2 µg/L), with removal efficiencies up to 90.5%, indicating immobilization of mercury species. The NZ has a great potential for economically viable remediation of mercury-contaminated environment. However, efforts should be made in the further study of mercury leachability to reduce the mercury concentration in water to acceptable levels.
Ključne besede: Idrija mine, mercury-contaminated soil and water, leaching, natural zeolite clinoptilolite, remediation
DiRROS - Objavljeno: 23.06.2022; Ogledov: 48; Prenosov: 21
Celotno besedilo (54,30 MB) |
