Results 11 to 20 of about 56,158 (342)

Vermiculite as an Eco-Friendly Catalyst in the Isomerization and Cyclization of Geraniol: Optimization Using the Response Surface Method [PDF]

Molecules
The isomerization of geraniol using natural, acid-modified minerals such as vermiculite presents a promising approach aligned with the principles of green chemistry.
Anna Fajdek-Bieda, Agnieszka Wróblewska, Mateusz Piz   +2 more
doaj   +2 more sources

Expansibility of vermiculite (Santa Luzia, Brazil) irradiated with microwave [PDF]

Cerâmica, 2021
The effect of microwave heating on the expansion of vermiculite was studied at a level of 700 W for 4 min exposure time and compared with raw vermiculite.
F. M. N. Silva, T. R. B. Barros, T. S. B. Barbosa, E. G. Lima, T. L. A. Barbosa, M. G. F. Rodrigues   +5 more
doaj   +1 more source

Synergistic effect of vermiculite and submerged plants on lake sediments

Water Biology and Security, 2023
The synergistic effect of vermiculite and the submerged macrophytes Vallisneria spiralis and Hydrilla verticillata on lake sediment was studied using diffusive gradients in thin films (DGT) technology. The dynamics of phosphorus (P) fractions in sediment,
Rou Wang, Yunli Liu, Feng Luo, Guoliang Bai, Yadong Tang, Qingjun Fang, Jiying Zhu, Beining Li, Zisen Liu, Feng He, Qiaohong Zhou, Zhenbin Wu, Yi Zhang   +12 more
doaj   +1 more source

Properties of fire-retardant vermiculite-concrete composite and fine-grained concrete for two-layer reinforced cement structures

Вестник Дагестанского государственного технического университета: Технические науки, 2022
Objective. Development of compositions of fire-retardant vermiculite-concrete composites for reinforced cement structures. Investigation of the properties of fire-retardant vermiculite-concrete composite and fine-grained concrete for two-layer reinforced
T. A. Khezhev, G. N. Khadzhishalapov, F. M. Shogenova, A. Kh. Artabaev, M. Kh. Mashukova   +4 more
doaj   +1 more source

Effects of exfoliation temperature for vermiculate aggregates modified by sodium ions on thermal and comfort properties of a new generation cementitious mortar

Journal of Sustainable Construction Materials and Technologies, 2022
Vermiculite exfoliation is based on the principle when water between the layers evaporate, and the crystal layers spread out pressured by the steam. As a result, elongated, curved particles are formed.
Lütfullah Gündüz, Şevket Onur Kalkan
doaj   +1 more source

Acid Leaching Vermiculite: A Multi-Functional Solid Catalyst with a Strongly Electrostatic Field and Brönsted Acid for Depolymerization of Cellulose in Water

Molecules, 2022
Vermiculite is a natural mineral. In this study, vermiculite and acid-activated vermiculite was used as a solid acid catalyst for the hydrolysis of cellulose in water. The catalysts were characterized by XRD, FT-IR, and BET.
Xingtao Chen, Dongshen Tong, Zhi Fang, Zhenpeng Gao, Weihua Yu   +4 more
doaj   +1 more source

Effect of vermiculite feed additive on the chemical, mineral, and amino acid compositions of quail meat [PDF]

Veterinary World, 2023
Background and Aim: Poultry farming plays a significant role in providing the population with high-quality and cheap meat products. The development and success of this industry depend on the proper use of available feed.
Gulbanu Aрdraim, Nurzhan Sarsembayeva, Bozena Lozowicka   +2 more
doaj   +1 more source

The development of premix technology with vermiculite filler

Алматы технологиялық университетінің хабаршысы, 2023
In achieving a high level of biological usefulness of feeding poultry, the enrichment of compound feed with a complex of biologically active additives – premixes is of decisive importance. The organization of the production of high-quality premixes is an
S. T. Zhienbaeva, A. M. Yermukanova, Z. B. Tleubayeva   +2 more
doaj   +1 more source

Utilization of Vermiculite for Solving Hematite Sagging in Water-Based Drilling Fluids

Geofluids, 2022
The sagging phenomenon of solids, such as hematite, in drilling fluids is commonly experienced when drilling at elevated temperature conditions presenting operational and well control issues.
Salem Basfar, Ashraf Ahmed, Salaheldin Elkatatny   +2 more
doaj   +1 more source

Implementation of iceplant production under semi-controlled conditions

Revista de la Facultad de Ciencias Agrarias, 2021
Mesembryanthemum crystallinum is considered a drought and saline stress-tolerant plant with many biological activities that has been revalued as cool flavouring plant.
María del Carmen Rodríguez-Hernández, Idoia Garmendia López   +1 more
doaj   +1 more source