Results 21 to 30 of about 29,105 (295)

Preparation of graphene-carboxymethyl cellulose composite aerogel and evaluation of oil absorption performance

Cailiao gongcheng, 2022
With graphite oxide (GO) as the main raw material, combining with carboxymethyl cellulose (CMC), hydrothermal reduction combined ice template method was used to prepare graphene/carboxymethyl cellulose composite aerogel (HGA/CMC), through drying under ...
ZHANG Linlin, GU Xuelin, XIANG Xiaoxiao, LIU Huie, CHEN Shuang   +4 more
doaj   +1 more source

Sonochemical effect and pore structure tuning of silica xerogel by ultrasonic irradiation of semi-solid hydrogel

Ultrasonics Sonochemistry, 2021
Silica xerogels were prepared by the sol-gel method under ultrasonic irradiation, using tetraethylorthosilicate (TEOS) as the starting material. Hexamethyldisiloxane (HMDSO) was used as the hydrophobizing agent.
Yuki Maeda, Yamato Hayashi, Jun Fukushima, Hirotsugu Takizawa   +3 more
doaj   +1 more source

Eco-friendly approach for preparation of water-based superhydrophobic silica aerogels via ambient pressure drying

Materials Research Express, 2021
In this work, superhydrophobic methyltrimethoxysilane (MTMS)-based silica aerogels were fabricated via water-based sol–gel reaction by ambient pressure drying (APD) method in the presence of surfactant.
Xiaoling Yuan, Lihui Xu, Hong Pan, Yong Shen, Liming Wang, Mingrui Xie   +5 more
doaj   +1 more source

Origin of the Springback Effect in Ambient-Pressure-Dried Silica Aerogels: The Effect of Surface Silylation

Gels, 2023
Ambient pressure drying (APD) can prospectively reduce the costs of aerogel fabrication and processing. APD relies solely on preventing shrinkage or making it reversible.
Fabian Zemke, Julien Gonthier, Ernesto Scoppola, Ulla Simon, Maged F. Bekheet, Wolfgang Wagermaier, Aleksander Gurlo   +6 more
doaj   +1 more source

A new moisture control method: Analysis of dynamic changes of temperature and moisture in coal particles during drying

Energy Reports, 2022
The vapor–solid double split moving bed dryer compared to other dryer achieves the purpose of uniform drying of particles and higher drying efficiency. Aiming at theoretical blind spots and technical errors in this technology, a small drying device with ...
Ze Zhang, Shuting Zhang
doaj   +1 more source

Process Variable Optimization in the Manufacture of Resorcinol–Formaldehyde Gel Materials

Gels, 2018
Influence of process parameters of resorcinol–formaldehyde xerogel manufacture on final gel structure was studied, including solids content, preparation/drying temperature, solvent exchange, and drying method.
Martin Prostredný, Mohammed G. M. Abduljalil, Paul A. Mulheran, Ashleigh J. Fletcher   +3 more
doaj   +1 more source

Aerogels: promising nanostructured materials for energy conversion and storage applications

Materials for Renewable and Sustainable Energy, 2020
Aerogels are 3-D nanostructures of non-fluid colloidal interconnected porous networks consisting of loosely packed bonded particles that are expanded throughout its volume by gas and exhibit ultra-low density and high specific surface area.
S. Alwin, X. Sahaya Shajan
doaj   +1 more source

Cast-In-Situ, Large-Sized Monolithic Silica Xerogel Prepared in Aqueous System

Molecules, 2018
This paper reports the preparation of cast-in-situ, large-sized monolithic silica xerogels by a two-step acid–base catalyzed approach under ambient pressure drying.
Wenhui Ding, Xiaodong Wang, Dong Chen, Tiemin Li, Jun Shen   +4 more
doaj   +1 more source

Effect of Drying Control Agent on Physicochemical and Thermal Properties of Silica Aerogel Derived via Ambient Pressure Drying Process

Energies, 2023
This paper presents the effect of drying control agents on the physicochemical and thermal properties of hydrophobic silica aerogels derived via the ambient pressure drying (APD) method by a surface silylation using a TMCS/n-hexane mixture.
Natalia Pawlik, Barbara Szpikowska-Sroka, Artur Miros, Bronisław Psiuk, Agnieszka Ślosarczyk   +4 more
doaj   +1 more source

Structural characteristics of P123-modified supercritical drying and hydrophobic ambient pressure drying aerogels

Journal of Non-Crystalline Solids, 2013
AbstractSupercritical drying (SCD) and hydrophobic ambient pressure drying (APD) aerogels were prepared from hydrolysis of tetraethoxysilane in solutions of poly(ethylene oxide)–poly(propylene oxide)–poly(ethylene oxide) (P123) in the range of composition below the threshold for the ordered mesoporous silica precipitation.
Awano, C. M., Donatti, D. A., De Vicente, F. S., Vollet, D. R.   +3 more
openaire   +4 more sources