scholarly journals Ionothermal Synthesis of Triclinic SAPO-34 Zeolites

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 616
Author(s):  
Li Han ◽  
Xinxin Yan ◽  
Lulu Guo ◽  
Yanan Duan ◽  
Zheng Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Formation Mechanism ◽  
Crystallization Temperature ◽  
Molecular Sieve ◽  
Ostwald Ripening ◽  
Great Influence ◽  
Factors Affecting ◽  
Hierarchical Pores ◽  
Hierarchical Porous ◽  
Organic Amines

A triclinic SAPO-34 molecular sieve was synthesized ionothermally. The as-synthesized products were characterized by powder X-ray diffraction (XRD), scanning electron microscope (SEM), nuclear magnetic resonance (NMR), fourier infrared spectrometer (FT-IR) and thermogravimetric (TG) analyses. The formation mechanism of the hierarchical porous triclinic SAPO-34 zeolites and the factors affecting the morphology of the SAPO-34 molecular sieve were investigated. The results show that the formation mechanism of the hierarchical pores is in accordance with Ostwald ripening theory, and the accumulation of grains constitutes the existence of mesopores and macropores. The crystallization temperature, ionic liquid type, and organic amines can effectively change the morphology and crystallinity of the SAPO-34 molecular sieve. The crystallization temperature, ionic liquid and template have great influence on the (111) crystal plane, thus affecting the morphology of the molecular sieve. Moreover, it can be proven through NMR and TG analyses that ionic liquids and organic amines can be used as structure directing agents together.

Synergic effects of a protic ionic liquid on P123 mixed micelles for inducing hierarchical porous materials

RSC Advances ◽  
2015 ◽  
Vol 5 (66) ◽  
pp. 53267-53274 ◽  
Author(s):  
Shuo Zhao ◽  
Xiaoli Sheng ◽  
Yuming Zhou ◽  
Man He ◽  
Xiaoqin Fu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Porous Materials ◽  
Formation Mechanism ◽  
Mixed Micelles ◽  
Porous Silica ◽  
Protic Ionic Liquid ◽  
Hierarchical Porous

Postulated formation mechanism of hierarchical porous silica.

Synthesis and Formation Mechanism of Nanoneedles and Nanorods of Manganese Oxide Octahedral Molecular Sieve Using an Ionic Liquid

2006 ◽  
Vol 110 (13) ◽  
pp. 6609-6614 ◽  
Author(s):  
Li-Xia Yang ◽  
Ying-Jie Zhu ◽  
Wei-Wei Wang ◽  
Hua Tong ◽  
Mei-Ling Ruan
Keyword(s):  
Ionic Liquid ◽  
Manganese Oxide ◽  
Formation Mechanism ◽  
Molecular Sieve

Assessing Low-Cost Housing Demand in Melaka: PLS-SEM Approach

2013 ◽  
Vol 838-841 ◽  
pp. 3156-3162 ◽  
Author(s):  
Noor Yasmin Zainun ◽  
Nadzirah Roslan ◽  
Aftab Hameed Memon
Keyword(s):  
Low Income ◽  
Goodness Of Fit ◽  
Housing Stock ◽  
Low Cost ◽  
Great Influence ◽  
Economic Factor ◽  
Housing Demand ◽  
Factors Affecting ◽  
Low Cost Housing ◽  
The Government

Housing is one of the basic needs of human. Population in Malaysia is increasing and expected to reach up to 35 million in year 2020. This phenomenon creates high demand for housing. To tackle the squatter problems, the government introduces low-cost housing. Low cost house is known as the government house, where the price is cheaper but still comfortable. Although there are many of low-cost housing projects have been completed to cope with the need of the citizen especially for low-income group. However, census report reveled that these is huge demand of low-cost housing. This demand might be because of various factors which are very essential to identify in order to meet the required demand of low cost houses. Hence, this study is carried out to assesse the demand of low cost housing in Melaka, determine the significant factors affecting demand of low-cost housing, and establish PLS-SEM model for assessing factors affecting low-cost housing demand. In this study, data are collected by distributing questionnaire in Melaka state. The collected data from survey was analyzed using statistical software SPSS and presented in graphs and chart. Further, factors affecting low cost housing demand in Melaka were modeled with the SmartPLS v2.0. The model shows the relationship between low cost housing demand and its indicators. The finding of the study showed that most significant indicators affecting the demand of low-cost housing in Melaka are the economic factors which include housing stock, inflation rate and Gross Domestic Products (GDP). The Goodness of Fit showed that the model has substantial explaining power for the assessing factors affecting low cost housing demand in Melaka which the values is 0.481. This means that the economic factor has a great influence on the low-cost housing demand in Melaka.

Remote Sensing Monitoring and Analysis on Land Utilization Status on Aksu River Basin of Xinjiang Uygur Autonomous Region

2011 ◽  
Vol 282-283 ◽  
pp. 177-180
Author(s):  
Bai Lian Lai
Keyword(s):  
Remote Sensing ◽  
River Basin ◽  
Great Influence ◽  
Land Development ◽  
Tarim River ◽  
Tarim River Basin ◽  
Land Utilization ◽  
Factors Affecting ◽  
Remote Sensing Monitoring ◽  
The Tarim River Basin

Aksu river is one of the biggest branches in the Tarim river basin, where the land utilization and its changes have great influence on the water supply in the lower reaches, and they are also the main factors affecting its ecological restoration. This paper, with the help of three-level intermediate resolution and remote sensor, carries out the remote sensing monitoring and analysis on its land utilization, analyses the changes of farmland and construction land, and provides basis for the planning of land development and the comprehensive assessment for the ecological environment.

Enhanced Thermal Conductivity for Graphene Nanoplatelets/Epoxy Resin Composites

2017 ◽  
Vol 10 (1) ◽  
Author(s):  
Dahai Zhu ◽  
Yu Qi ◽  
Wei Yu ◽  
Lifei Chen ◽  
Mingzhu Wang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Epoxy Resin ◽  
Mass Fraction ◽  
Great Influence ◽  
Graphene Nanoplatelets ◽  
Resin Matrix ◽  
Heat Conducting ◽  
Factors Affecting ◽  
Molding Method ◽  
Ep Matrix

Graphene nanoplatelets (GNPs) have excellent thermal conductivity. It can significantly improve the heat-conducting property of epoxy resin (EP) matrix. In this paper, the GNPs/EP composites were successfully prepared by using ultrasonication and the cast molding method. The prepared GNPs/EP composites were systematically characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and thermal conductivity analyzer. Some factors affecting the thermal transfer performance of the composites were discussed. The defoamation has great influence on the thermal conductivity of composite. There is a nearly linear relationship between the mass fraction and the thermal conductivity of composite when the mass fraction of GNPs is below 4.3%. The results show that when the mass fraction of GNPs is 4.3% with crushing time of 2 s, the thermal conductivity of GNPs/EP composite is up to 0.99 W/m K. The thermal conductivity is increased by 9.0% compared with that without pulverization treatment (0.91 W/m K). When it is ground three times, the thermal conductivity of composite reaches the maximum (1.06 W/m K) and it is increased by 307.7% compared with that of epoxy resin matrix.

scholarly journals Modeling of geometry and insertion force of a new lancet medical needle

2019 ◽  
Vol 103 (1) ◽  
pp. 003685041989107
Author(s):  
Yingchun Qi ◽  
Jingfu Jin ◽  
Tingkun Chen ◽  
Qian Cong
Keyword(s):  
Great Influence ◽  
Large Change ◽  
Processing Parameters ◽  
Needle Insertion ◽  
Grinding Wheel ◽  
Insertion Force ◽  
Factors Affecting ◽  
Organ Tissue ◽  
Needle Insertion Force ◽  
The Relationship

Lancet needle is a typical medical treatment device. Its tip consists of two lancet planes and one bevel plane. When the lancet needle is inserted into soft organ tissue, the insertion force may influence the needle cutting direction and treatment effect and increase the pain. One of the main factors affecting this insertion force is the geometry of the needle tip. Based on the research on the shape and processing method of the conventional lancet needle, a new lancet needle tip geometry was obtained by adjusting the relative position of the grinding wheel to the needle. A mathematical model of this new lancet needle was established. The relationship between processing parameters and needle shape was analyzed, and the needle insertion force was predicted. Compared with the conventional lancet needle, the new lancet needle is sharper, and the insertion force on the cutting edge is smaller. However, this change in the grinding position of the needle lancet plane has a great influence on the shape of needle tip near the intersection of the bevel plane and the lancet plane. Some special second bevel angle and rotated angle will cause a large change in the specific force at the intersection place, which is not conducive to reducing the insertion force.

Insight into the formation and permeability of ionic liquid unilamellar vesicles by molecular dynamics simulation

Soft Matter ◽  
2020 ◽  
Vol 16 (10) ◽  
pp. 2605-2610 ◽  
Author(s):  
Kun Jiang ◽  
Xiaomin Liu ◽  
Hongyan He ◽  
Jianji Wang ◽  
Suojiang Zhang
Keyword(s):  
Molecular Dynamics ◽  
Ionic Liquid ◽  
Molecular Dynamics Simulation ◽  
Formation Mechanism ◽  
Dynamics Simulation ◽  
Unilamellar Vesicles ◽  
Insight Into

The formation mechanism and permeability properties of [C12mim][Sal] vesicles are investigated by molecular dynamics simulation.

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