Alkali metal

Sugarcane bagasse ash (SCBA) is an industrial waste that consists of silicon oxides, calcium, aluminum, iron, magnesium, and alkali metal oxides. The composition and structure of thermomechanical treated SCBA was analyzed by X-ray fluorescence (XRF), Scanning Electron Microscopy (SEM) and X-Ray diffraction (XRD). Thermomechanical treated SCBA was mixed with clay, quartz and feldspar at different compositions according to an appropriate mixing ratio and using this mixture for the production of dry pressed ceramic tiles.

6p dianmotminh02 03-05-2024 5 1   Download

Ebook "The Periodic table (Essential chemistry series)" is a chart that includes all of the natural and artificial elements known in the universe. Elements are basic building blocks of matter. The periodic table is more than a list of the elements. It is also a guide and tool to understanding all chemical reactions and the materials involved in building the Earth and the universe. This book will describe the history and science behind the periodic table and take an in-­depth look at all the major groups of elements.

121p coduathanh1122 27-03-2024 4 1   Download

Ebook "Solid base catalysis (Springer series in Chemical physics, Volume 101)" is focused on the solid base. Because of the advantages over liquid bases, the use of solid base catalysts in organic synthesis is expanding. Solid bases are easier to dispose than liquid bases, separation and recovery of products, catalysts and solvents are less difficult, and they are non-corrosive. Furthermore, base-catalyzed reactions can be performed without using solvents and even in the gas phase, opening up more possibilities for discovering novel reaction systems.

431p manmanthanhla0201 26-02-2024 9 2   Download

Part 1 book "Modern medical toxicology" includes content: Diagnosis of poisoning, general management of poisoning, medicolegal aspects of poisoning, mineral acids (inorganic acids), organic acids, alkalis and other caustics, plants of special importance, non metallic chemical poisons, heavy metals, venomous bites and stings, irritant plants, anaesthetics and muscle relaxants, somniferous drugs.

315p oursky02 06-08-2023 4 1   Download

Small polarons are quasi-particles in materials formed by a charge carrier and its self-induced distortion. In cathode materials containing transition metal elements, small polarons play an important role in the diffusion of charge carriers. In order to grasp the fundamentals of small polarons inside cathodes, we highlight the recent progress from both experiments and simulations focusing on the formation of small polarons and their migration.

13p viberbers 09-08-2023 7 3   Download

This review covers recent advances in the synthesis of cerium dioxide, its properties, and potential applications. Cerium dioxide is known for its abilities to form surface vacancies, store and release oxygen, as well as to increase the thermal stability of the material by metal-Ce interactions, etc.

11p viberbers 09-08-2023 5 4   Download

Novel organic materials have played a tremendous role in developing high-performance nonlinear optical materials. Herein, the geometric, electronic and nonlinear optical properties of designed alkali (Li, Na, and K) and alkaline earth metals (Be, Mg, and Ca) doped cubane (C8H8) complexes have been explored by using density functional theory.

12p viberbers 09-08-2023 4 3   Download

Density functional theory (DFT) calculations were performed to investigate the adsorption of carbon dioxide (CO2) on metal-organic framework (MOF-5) and alkali-metal (Li, K, Na) doped MOF-5s. The adsorption energy calculation showed that metal atom adsorption is exothermic in MOF-5 system. Moreover, alkali-metal doping can significantly improve the adsorption ability of carbon dioxide on MOF-5. The best influence is observed for Li-doping.

6p runordie3 27-06-2022 17 2   Download

New polymeric phthalocyanine moieties (M = 2H, Zn, Ni, Cu, and Co) were synthesized via polytetracyclomerization reaction of o-bis[3-(3,4-dicyanophenoxy)propyloxy]benzene (3), which can be obtained by the reaction of 4-nitrophthalonitrile with o-bis[(3-hydroxypropyl)oxy]benzene. Aggregation and disaggregation behavior of the polymeric phthalocyanine (5) was studied with some alkali and earth alkali metal cations. Measured intrinsic viscosities of the polymeric phthalocyanines exhibited a substantial decreasing tendency with dilution of the solution.

18p langthannam 29-12-2021 5 0   Download

A carboxymethylcellulose (CMC)-degrading bacterium was isolated from soil, identified as Bacillus methylotrophicus according to the physiological properties and analyses of 16S rRNA and a partial sequence of the gyrase A (gyrA) gene, and named as B. methylotrophicus Y37. The CMCase enzyme was purified to homogeneity by 20.4-fold with 21.73% recovery using single-step hydrophobic interaction chromatography and biochemically characterized. CMCase showed a molecular weight of approximately 50 kDa as determined by SDS-PAGE.

14p langthannam 29-12-2021 9 0   Download

Lecture Physics A2: Atomic physics. After studying this section will help you understand: particles in 3D potentials and the Hydrogen atom, spectral lines of Hydrogen atom, spectral lines of the alkali metal atoms, angular momentum, electron spin, atomic states, Pauli principle, building atoms and molecules,...

19p xusong 21-07-2021 13 1   Download

The article introduces some measures to develop self-learning ability for pupils through teaching the exercises in "Chapter 6: Alkali metals - Alkaline Earth Metals - Aluminum”. Thus helps the teachers use chemistry exercises flexibly and effectively in the process of chemistry teaching which guides pupils make well self-learning, self - reading and self-assessment of studying results.

8p tamynhan9 02-12-2020 18 2   Download

We obtained the analytic expressions of the specific heat at constant volume of metals which are dependent on the value of q-deformed parameters. Results calculated for the specific heat at constant volume for some kinds of alkali and transition metals show good agreement with those obtained by other theories and in experiments as well.

8p tamynhan8 04-11-2020 6 2   Download

Immersion of painted idols and addition of organic wastes in the lake water, as a part of religious activities, is a common religious practice in India. These activities add to the contamination of water with alkali, alkaline earth metals and heavy metals and therefore, degrade water quality and limit conservation of good quality water in the lakes. In this pretext, periodic analysis of Madiwala and Lalbagh lake water were carried out to investigate the impact of idol immersion activities on the lake water quality.

10p angicungduoc5 12-06-2020 14 3   Download

The regioselective demethoxylation and dehalogenation of dihalogenated dibenzocyclooctadiene lignans derivatives were realized in a one-step reaction with excellent yields in the sodium and t-butanol reaction system.

9p vijiraiya2711 27-05-2020 10 1   Download

It is well known that salinization (high-pH) has been considered as a major environmental threat to agricultural systems. The aim of this study was to investigate the differences between salt stress and alkali stress in metabolic profiles and nutrient accumulation of wheat; these parameters were also evaluated to determine the physiological adaptive mechanisms by which wheat tolerates alkali stress.

13p vihashirama2711 21-05-2020 15 1   Download

The rapid increase in emissions of major greenhouse gases such as CO2 and CH4 in the last decade has seriously affected the climate change and the living environment in the world in general and in Vietnam in particular. In addition, the demand for effective use of CO2 - rich natural gas has promoted studies to find new, highly active and stable catalysts for the methane reforming process. NiO has proven to be the most suitable catalyst for industrial application of the reforming process.

13p nguathienthan2 24-12-2019 21 0   Download

Sewage sludge is the promising raw material for biosorbent preparation. In this work, we evaluated the heavy metals adsorption characteristics of alkali treated sewage sludge (ATSS) by equilibrium studies. The adsorption isotherms were fitted with Langmuir and Freundlich models. Comparing with untreated sewage sludge, the total adsorption capacity (qm) of ATSS (prepared with 0.125 mol/L NaOH) for Cd, Pb, Ni, increase d by 0.51, 0.70 and 0.32 mmol/g, respectively. When the NaOH concentration for ATSS preparation increase d from 0.125 mol/L to 0.

7p mentospurefresh 29-11-2019 17 1   Download

Tài liệu tập huấn giảng viên dạy chuyên ngành bằng tiếng Anh (Khoa Hóa học) gồm có những nội dung chính như sau: Bài 1 - Kinh nghiệm xây dựng chương trình môn hóa học bằng tiếng Anh, bài 2 - Matter and classification of matter, bài 3 - Elements and periodic table, bài 4 - The alkali metals, bài 5 - Ankanes. Mời các bạn cùng tham khảo.

44p tangtuy06 01-04-2016 199 46   Download

Generally, biomass is used for all materials originating from photosynthesis. In other words, biomass includes all plant growth, herbaceous plants, microalgae, macroalgae and aquatic plants. But biomass can equally apply to animal as well. In fact, biomass is carbon based and is composed of a mixture of organic molecules containing hydrogen, usually including atoms of oxygen, often nitrogen and also small quantities of other atoms, including alkali, alkaline earth and heavy metals.

272p ktcn_1 10-07-2012 67 11   Download