آخرین محصولات

Physical, chemical and optical properties of aqueous L …

The mathematical modelling of the solution growth of high quality single crystals requires a good understanding of the fluid properties. In addition to the physical and mechanical properties a detailed knowledge of the optical parameters is required to study the dynamics of the crystal growth process. Measurements of polarizability, refractive index, optical dispersion, solubility, …

The biological and physical performance of high strength …

The chemical properties of calcium phosphate cements are very similar to the mineral phase of bone, consequently, CPCs are very effective substrates (scaffolds) for tissue engineering; bone engineering; and so on. ... The biological and physical performance of high strength dicalcium phosphate cement in physiologically relevant models ...

Physical and electrochemical properties of doped lithium iron phosphate

Stoichiometric and non-stoichiometric Mg-doped lithium iron phosphates were synthesised via spray-pyrolysis, followed by sintering at high temperature for crystallization. The spray pyrolysis process allows the homogeneous mixing of the ingredient reactants at atomic level. The electronic conductivities of the Mg-doped lithium iron phosphates have been …

Phosphorus, Chemical Element

Phosphorus is found in Group 15 (VA) of the periodic table. The periodic table is a chart that that shows how chemical elements are related to each other. Phosphorus is part of the nitrogen …

What are the physical properties of phosphorus?

What are the physical properties of white phosphorus? White phosphorus is a colorless, white, or yellow waxy solid with a garlic-like odor. It does not occur naturally, but is manufactured from phosphate rocks. White phosphorus reacts rapidly with oxygen, easily catching fire at temperatures 10 to 15 degrees above room temperature.

Influence of moderate pre-oxidation treatment on the physical, chemical

The influence of pre-oxidation treatment on the physical, chemical and phosphate adsorption properties of iron-containing AC were determined. Two series of ACs, non-oxidized and oxidized carbon modified by iron (denoted as AC-Fe and AC/O-Fe), resulted in a maximum impregnated iron of 4.03% and 7.56%, respectively.

Structural, chemical and mechanical properties of phosphate …

1. Introduction. Phosphate-based glasses are one of the most interesting materials, because of their functional physical and chemical properties, including high thermal expansion coefficient, low melting, and processing temperatures and controllable chemical durability in an aqueous environment [1].For that it is currently the subject of different …

Nitrogen & Phosphorus | Physical & Chemical Properties

Physical Properties of Phosphorus. Phosphorus is found in combination with other elements rather than occurring alone in nature. Found in minerals, the membranes of living cells, and in 0.09% of ...

The physical and chemical properties of electroless nickel–phosphorus …

Novel insights into the manufacture of nickel–phosphorus black surfaces by chemical etching of electroless-deposited Ni–P alloy has been achieved by examining the influence of pre-etch phosphorus composition and etching method on the resulting morphology, composition and reflectance of the black surface produced. An optimum phosphorus composition and etching …

Changes in Physical and Chemical Properties of Sucrose …

Therefore, this research used different pressing temperatures and sucrose/ammonium dihydrogen phosphate (ADP) composition ratios to optimize the properties of particleboards. The physical and ...

Physical, Thermal, and Optical Properties of Mn

This work reports on various properties and analysis of optical interactions in phosphate glasses containing red-emitting Mn2+ and near-infrared (NIR)-emitting Nd3+ ions, which are of interest for energy applications …

18.9: The Chemistry of Phosphorus

This Youtube video link shows various experiments with white phosphorus, which help show the physical and chemical properties of it. It also shows white …

CHEMICAL AND PHYSICAL PROPERTIES OF COMPOST

Compost is primarily used as a soil conditioner with rate of 20 m 3 /fed for all treatments The physical and chemical properties of the used cattle manure and herbal plants residues (50: 50) are ...

Physical and thermal treatment of phosphate ores — An …

This overview discusses and summarizes the State-of-the-Art and the existing efforts to overcome these problems and to produce a high-grade phosphate product …

Phosphate (PO43-)

High levels of phosphorus are present in protein foods such as milk and milk products and meat and alternatives such as beans, lentils and nuts. Grains, in particular whole grains, give …

Study on the physical and chemical properties of lead

With the rapid development of industry, heavy metal pollution has seriously damaged the health of soil, and heavy metals spread through the food chain, posing a threat to human health. The firm ...

Physical and thermal treatment of phosphate ores — An …

Sometimes, calcination temperature is higher than this range, which may be as high as 800 °C to burn the residual carbon. At this low range of temperature, physical and chemical properties of the phosphate minerals are not significantly affected and hence, the reactivity index of the phosphate is not remarkably affected.

Zinc Phosphate Nanoparticles: A Review on …

This review is aimed to explore different methods for the synthesis of zinc phosphate nanoparticles, including physical, chemical, and more recently, biological approaches (using various sources ...

Deterioration mechanism of physical and mechanical properties …

1 Yunnan Phosphate Chemical Group Co., Ltd., Kunming, China; 2 College of Mathematics and Statistics, Chongqing University, Chongqing, China; 3 State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, China; 4 School of Resources and Safety Engineering, Chongqing University, Chongqing, China; Introduction: To …

Phosphorus

Some elements exist in several different structural forms, called allotropes. Each allotrope has different physical properties. For more information on the Visual Elements image see the …

Physical and thermal treatment of phosphate ores — An …

The sedimentary phosphate ores having carbonate-apatite as the main phosphate minerals and containing carbonates (calcite and/or dolomite) represent a challenge in the field of phosphate concentration due to similarity in the physico-chemical properties of surfaces of the ore constituents. Also, if considerable amount of organic matter ...

The Effect of Curing Temperature on Physical and Chemical Properties …

Fly ash–based geopolymers required heat to increase the geopolymerization process in order to obtain higher compressive strength. As such, geopolymer samples were prepared using different curing temperatures (room temperature, 50 °C, 60 °C, 70 °C, 80 °C), in which sodium silicate and NaOH were used as alkaline activators.The samples were cured for …

Phosphoric Acid

The first technique usually gives a purer yield, due to the high arsenic concentration of phosphorus pentoxide. Phosphates. The salts of phosphoric acid are compounds that are broadly used in agriculture, industry, and in domestic use. ... Haloalkanes: Physical and Chemical Properties of Haloalkanes. Ethers Nomenclature. Preparation of Standard ...

Phosphorus | History, Uses, Facts, Physical

Phosphorus undergoes spontaneous ignition in air and forms pentoxide (P 4 O 10). There are two allotropic forms of phosphorus, red and black, that differ in physical and chemical properties. Red phosphorus (which is formed by …

Review of Physical and Chemical Properties of Tributyl Phosphate …

Numerous publications have examined the chemical and physical aspects of tributyl phosphate (TBP), TBP/nitric acid, and TBP/diluent/nitric acid systems, but there are some discrepancies within the available data. There is also a lack of data on the physical properties of TBP at temperatures above 60°C.

Influence of moderate pre-oxidation treatment on the physical, chemical

Due to its high efficiency for phosphate treatment, easy commercial availability, and working experience of water treatment, the iron-containing activated carbon can be considered a useful adsorbent for phosphate. ... Guo, Y.P., Rockstraw, D.A., 2006. Physical and chemical properties of carbons synthesized from xylan, cellulose, and kraft ...

CHEMICAL AND PHYSICAL INFORMATION

Phosphate esters are considered derivatives of the tri protic acid, phosphoric acid O=P(OH)3, with the general formula of RxH3-xPO4 where x=1 for mono, x=2 for di, and x=3 for triesters. Phosphorus has a high affinity for oxygen due to the difference in electronegativity (1.4), and consequently, the P=O bond possesses more σ character than π character. Therefore, the …

Physical and optical analysis of Sm3+ doped zinc phosphate …

The unique physical, chemical and thermal properties of oxide-based phosphate glasses make them important for various applications like in high energy laser applications, solid-state batteries, and fiber amplifiers [12]. It can be studied that zinc phosphate glass is a promising material for optoelectronic applications.

Physical and chemical stability of etoposide phosphate solutions

Objective: To evaluate the physical and chemical stability of etoposide phosphate solutions over 7 days at 32 degrees C and 31 days at 4 degrees C and 23 degrees C: (1) at etoposide concentrations of 0.1 and 10 mg/mL as phosphate in 0.9% sodium chloride injection and 5% dextrose injection and (2) at etoposide concentrations of 10 and 20 mg/mL as phosphate in …

Phosphorus Facts

Atomic Number:15 Symbol:P Atomic Weight:30.973762 Discovery:Hennig Brand, 1669 (Germany) Electron Configuration: [Ne] 3s2 3p3 Word Origin:Greek: phosphoros: light-bearing, also, the ancient name given the planet Venus before sunrise. Properties: The melting point …

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