Study on the effect of modified zeolite powder on curing mechanism of concrete

Construction and Building Materials, Год журнала: 2025, Номер 483, С. 141830 - 141830

Опубликована: Май 16, 2025

Язык: Английский

Modification of Natural and Synthetic Zeolites for CO2 Capture: Unrevealing the Role of the Compensation Cations

Materials, Год журнала: 2025, Номер 18(10), С. 2403 - 2403

Опубликована: Май 21, 2025

The development of highly effective natural-based adsorbents to face the increasing rates CO2 production and their delivery atmosphere are a big concern nowadays. For such purposes, synthetic natural zeolites were modified via an ion exchange procedure enhance uptake. Samples characterized by SEM, EDS, TGA nitrogen adsorption at 77 K, showing correct incorporation new metals; in addition, isotherms determined using gas analyser. During first stage, role compensation cations for was assessed modifying pure ZSM-5 zeolite with different metal precursors present salt solutions procedure. Then, five samples studied; bivalent cation (Zn2+ Cu2+) presented higher uptake than those monovalent (Na+ K+). Specifically, substitution Cu2+ increased capture without affecting surface properties zeolite. results depict prevalence π-cation interactions enhanced field gradient induced divalent lower ionic radii, if compared ones. Subsequently, considering best previous phase. This Surface Response Methodology implemented 11 varying concentration copper precursor time A quantitative quadratic model predict R2 0.92 obtained. depicted optimal conditions modify used capture. modification capacity more 20%, reaching 75.8 mg CO2/g

Язык: Английский

Effect of natural zeolite on the hydraulic conductivity of cement stabilized loess soil

Review of the Bulgarian Geological Society, Год журнала: 2024, Номер 85(3), С. 229 - 232

Опубликована: Дек. 1, 2024

The present study intends to make an assessment of the effect a natural zeolite addition on field hydraulic conductivity cement stabilized loess soil. Two single-borehole infiltration methods were used for in situ measurement field-saturated results indicate that heightens impermeability

Язык: Английский