Digital-Intellectual design of microporous organic polymers

2021 ◽  
Author(s):  
Li Yang ◽  
Lei Sun ◽  
Yan-Liang Zhao ◽  
Jikai Sun ◽  
Qi-Wen Deng ◽  
...  
Keyword(s):  
Surface Area ◽  
Pore Volume ◽  
Gas Adsorption ◽  
Large Surface Area ◽  
High Porosity ◽  
Organic Polymers ◽  
Excellent Performance ◽  
Microporous Material ◽  
Microporous Organic Polymers ◽  
Large Pore Volume

Microporous organic polymers (MOPs) are a new kind of microporous material. Due to their high porosity, large pore volume, and large surface area, MOPs exhibit excellent performance in gas adsorption...

A novel mesoporous hydrogen-bonded organic framework with high porosity and stability

2020 ◽  
Vol 56 (1) ◽  
pp. 66-69 ◽  
Author(s):  
Bin Wang ◽  
Xiu-Liang Lv ◽  
Jie Lv ◽  
Li Ma ◽  
Rui-Biao Lin ◽  
...  
Keyword(s):  
Surface Area ◽  
Pore Volume ◽  
High Surface ◽  
High Surface Area ◽  
High Porosity ◽  
Thermally Stable ◽  
Large Pore ◽  
Large Pore Volume ◽  
Organic Framework ◽  
Hydrogen Bonded

A highly chemically and thermally stable mesoporous hydrogen-bonded organic framework with a high surface area and a large pore volume has been rationally designed and constructed.

An approach to carbon nanotubes with high surface area and large pore volume

2007 ◽  
Vol 100 (1-3) ◽  
pp. 1-5 ◽  
Author(s):  
Jun Jie Niu ◽  
Jian Nong Wang ◽  
Ying Jiang ◽  
Lian Feng Su ◽  
Jie Ma
Keyword(s):  
Carbon Nanotubes ◽  
Surface Area ◽  
Pore Volume ◽  
High Surface ◽  
High Surface Area ◽  
Large Pore ◽  
Large Pore Volume

scholarly journals Macroalgae-derived nitrogen-doped hierarchical porous carbons with high performance for H2 storage and supercapacitors

RSC Advances ◽  
2017 ◽  
Vol 7 (52) ◽  
pp. 32795-32805 ◽  
Author(s):  
Xingxing Wu ◽  
Zhongwei Tian ◽  
Langqing Hu ◽  
Sha Huang ◽  
Jinjun Cai
Keyword(s):  
Surface Area ◽  
Pore Volume ◽  
High Performance ◽  
Enteromorpha Prolifera ◽  
Porous Carbons ◽  
Excellent Performance ◽  
Nitrogen Doped ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons

Enteromorpha prolifera was converted into hierarchical carbons through the carbonization and activation with surface area and pore volume up to 3345 m2 g−1 and 1.94 cm3 g−1, showing excellent performance for H2 storage and supercapacitors.

Effects of extraction process on the dried cell wall pore structure of messmate heartwood

BioResources ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. 6074-6082
Author(s):  
Weikai Wang ◽  
Minghan Li ◽  
Jiabin Cai
Keyword(s):  
Cell Wall ◽  
Specific Surface ◽  
Pore Structure ◽  
Surface Area ◽  
Specific Surface Area ◽  
Pore Volume ◽  
Gas Adsorption ◽  
Extraction Process ◽  
Micropore Volume ◽  
Adsorption Method

In order to study the effects of a messmate heartwood extraction process on its cell wall pore structure and its drying ability, its nanopore structure was explored after via gas adsorption technology. Specifically, the messmate heartwood particles were extracted with methanol, and then the cell wall pore structure of the original and extracted samples were evaluated by N2 and CO2 sorption and pycnometer methods, respectively. Overall, compared with the original samples, the cell wall porosity, micropore volume, mesopore volume, BET specific surface area, and specific surface area of the micropores of the extracted messmate heartwoods increased by 2.55%, 0.007 cm3/g, 0.0014 cm3/g, 0.24 m2·g-1, and 21.9 m2·g-1, respectively. The cell wall pore volume measured via the gas adsorption method was smaller than the measurement from the pycnometer method. The results indicated that the presence of extractives made the messmate cell wall have a decreased pore volume and porosity, which may be one of the reasons messmate wood is difficult to dry. Messmate extractives primarily were present in the micropores of the cell wall in the range of 0.4 nm to 0.7 nm. However, gas sorption technology could not detect all the pores in the cell wall of the messmate heartwood sample.

scholarly journals Morphology-Controllable Hydrothermal Synthesis of Zirconia with the Assistance of a Rosin-Based Surfactant

2019 ◽  
Vol 9 (19) ◽  
pp. 4145 ◽  
Author(s):  
Chen Guo ◽  
Peng Wang ◽  
Shengliang Liao ◽  
Hongyan Si ◽  
Shangxing Chen ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Aqueous Solutions ◽  
Pore Size ◽  
Surface Area ◽  
Calcination Temperature ◽  
Pore Volume ◽  
Crystal Size ◽  
Edge Angle ◽  
Large Pore Volume ◽  
Hollow Cube

With the assistance of a rosin-based surfactant, dehydroabietyltrimethyl ammonium bromine (DTAB), well-dispersed hollow cube-like zirconia particles were firstly synthesized by the hydrothermal treatment of ZrOCl2 aqueous solutions. The introduction of DTAB is crucial for improving the dispersion and regularity of the as-synthesized sample. After calcination, the crystal size of the calcined samples increased, and the edge angle of the cube-like particles became round accordingly. Finally, a hollow spherical morphology was formed for the sample calcined at 923 K. The as-synthesized sample showed big surface area of 146.78 m2/g and large pore volume of 0.23 cm3/g. With the increase of calcination temperature, the surface area and pore volume of the samples decreased significantly, and the pore size increased accordingly.

scholarly journals The influence factors for gas adsorption with different ranks of coals

2017 ◽  
Vol 36 (3-4) ◽  
pp. 904-918 ◽  
Author(s):  
Deyong Guo ◽  
Xiaojie Guo
Keyword(s):  
Moisture Content ◽  
Specific Surface ◽  
Pore Structure ◽  
Adsorption Capacity ◽  
Surface Area ◽  
Specific Surface Area ◽  
Pore Volume ◽  
Gas Adsorption ◽  
Total Pore Volume ◽  
Factors Influencing

In this paper, scanning electron microscopy, low-temperature N2 adsorption and CH4 isothermal adsorption experiments were performed on 11 coal samples with Ro,max between 0.98 and 3.07%. The pore structure characteristics of coals (specific surface area, total volume distribution) were studied to assess the gas adsorption capacity. The results indicate that there is significant heterogeneity on coal surface, containing numerous channel-like pores, bottle-shaped pores and wedge-shaped pores. Both Langmuir volume (VL) and Langmuir pressure (PL) show a stage change trend with the increase of coalification degree. For different coalification stages, there exist different factors influencing the VL and PL values. For low-rank coals (Ro,max < 1.1%), the increase of VL values and decrease of PL values are mainly due to the abundant primary pore and fracture within coal. For middle-rank coals (1.1% < Ro,max < 2.1%), the moisture content, vitrinite content and total pore volume are all the factors influencing VL, and the reduction of PL is mainly attributed to the decrease of moisture content and inertinite content. Meanwhile, this result is also closely related to the pore shape. For high-rank coals (Ro,max > 2.1%), VL values gradually increase and reach the maximum. When the coal has evolved into anthracite, liquid hydrocarbon within pore begins pyrolysis and gradually disappears, and a large number of macropores are converted into micropores, leading to the increase of specific surface area and total pore volume, corresponding to the increase of VL. In addition, the increase of vitrinite content within coal also contributes to the increase of VL. PL, reaches the minimum, indicating that the adsorption rate reaches the largest at the low pressure stage. The result is mainly controlled by the specific surface area and total pore volume of coal samples. This research results will provide a clearer insight into the relationship between adsorption parameters and coal rank, moisture content, maceral composition and pore structure, and it is of great significance for better assessing the gas adsorption capacity.

Synthesis of ordered mesoporous boron-doped γ-alumina with high surface area and large pore volume

2016 ◽  
Vol 178 ◽  
pp. 248-251 ◽  
Author(s):  
Guohui Cai ◽  
Xiaohai Zheng ◽  
Yong Zheng ◽  
Yihong Xiao ◽  
Ying Zheng
Keyword(s):  
Surface Area ◽  
Pore Volume ◽  
High Surface ◽  
High Surface Area ◽  
Boron Doped ◽  
Large Pore ◽  
Ordered Mesoporous ◽  
Large Pore Volume
Sign in / Sign up

Export Citation Format

Share Document