convert it into catalytic acitve material. The NaY zeolite is exchanged with ammonium ions to get rid of the sodium ions in an ionic exchange tanks which is then filtered out and sprayed with the exchange solution. The excess salts on the exchanged zeolites are removed by washing it. During hydrothermal treatment of the zeolite, it is partially dealmuninated and stabilized and the sodium ions that remains is moved to exchangeable position. The degree of dealumination and unit size of the product
Carbonate = Metal Oxide + Carbon Dioxide Malachite is an ore of copper. It is made mostly of copper carbonate. It can be crushed into a green powder. If this powder is heated it changes colour. A new substance has been made. The new substance is a black powder. This is called copper oxide. The copper carbonate has been decomposed. Copper oxide is made by thermal decomposition of copper carbonate. Carbon dioxide is also made. The formula for this is: Copper Carbonate = Copper Oxide + Carbon Dioxide
represents the elemental analysis of Orange peel powder and carbon made from Orange peel powder respectively. Besides that this component is widely used to be manufactured as an adsorbent to adsorb (CO2) gas. Orange peel contain Potassium Oxide (K2O) with 1.72%, Calcium Oxide (CaO) with 1.31% and others components in the minority. Therefore, with the great amount of carbon component, carbon produced from orange peel and also orange peel itself is one of the potential adsorbent to adsorb CO2 from gas mixture
chemist, improved Oersted's process by using metallic potassium. He was the first to measure the specific gravity of aluminum and show its lightness. In 1854 Henri Sainte-Claire Deville, in France, obtained the metal by reducing aluminum chloride with sodium. Aided by the financial backing of Napoleon III, Deville established a large-scale experimental plant and displayed pure aluminum at the Paris Exposition of 1855. Aluminum is a lightweight, silvery metal. The atomic weight of aluminum is 26.9815;
CONTENTS 1. INTRODUCTION .................................................................................................................................... 3 2. RAW MATERIALS ................................................................................................................................. 3 3. MANUFACTURING PROCESS ................................................................................................................. 4 4. GLASS FAILURE .....................
achieved by low frequency light of wavelength 365nm or less and heat[37, 38]. b. Sodium perborate (NaBO3) is odorless, white, water soluble powder. It is safest and most easily controlled material for bleaching when prepared with distilled water or hydrogen peroxide. It is stable in dry state but it breaks down to form sodium metaborate, nascent oxygen and hydrogen peroxide in presence of water, acid and warm air[2].Sodium perborate may be monohydrate ,trihydrate and tetrahydrate and are mostly used
Aims and Scope: Nowadays, nanotechnology is used in many different sciences. Plants are no exception. Therefore, we decided to study the beneficial effect of titanium dioxide and titanium dioxide nanoparticles phytotoxicity on some physiological characteristics of Melissa officinalis plant including germination, root length, shoot length, and photosynthetic pigments. The experiment was conducted in 2013 in the Research Laboratory of Islamic Azad University of Falavarjan, Isfahan, Iran. Methodology:
Rickert's sealer Zinc oxide (41.2 parts) Precipitated silver (30 parts) White resin (16 parts) Thymol iodide (12.8 parts) Oil of clove (78 parts) Canada balsam (22 parts) Grossman's Sealer Zinc oxide reagent (42 parts) Staybelite resin (27 parts) Bismuth subcarbonate (15 parts) Barium sulfate (15 parts) Sodium borate, anhydrous (1 part) Eugenol Wach's Sealer Zinc oxide (10 g) Calcium phosphate (2 g) Bismuth subnitrate (3.5 g) Bismuth subiodide (0.3 g) Heavy magnesium oxide (0.5 g) Canada balsam (20
Understanding About the Homogeneous Precipitation Synthesis and thermal analysis of the group 2(IIA) metal oxalate hydrates Objective : 1. To run the synthesis of calcium oxalate via the precipitate from solution containing calcium ion and oxalate ion. 2. To do a thermo gravimetric analysis on calcium oxalate. 3. Understand and practice the method of homogeneous precipitation through this experiment. Introduction Thermo gravimetric analysis (TGA) is one of the common analytical
exothermic so the temperature of the solution and container will rise and some heat will be lost to the surroundings. Purpose: The purpose of this experiment is to calculate the heat of formation of magnesium oxide by studying a series of reactions involving magnesium and magnesium oxide and using Hess’s Law. Hypothesis: If the heat of reaction is found for two equations, then Hess’s Law will be able to determine the heat of reaction of the desired product. Materials: • S... ... middle of
Aim The aim of this experiment was to prepare a pure sample of the organometallic compound ferocene. Introduction1 Ferrocene [bis( – cyclopentadienyl)iron] was the first compound of its kind to be discovered and gave rise to the class of organometallic compounds known as metallocenes. Ferrocene consists of iron metal coordinated to two cyclopentadienyl rings, one on each side of the metal. It was discovered accidentally by Pauson and Kealy, as they were trying to make fulvalene. More generally
Objective: To observe the single replacement reaction between iron and copper(II) sulfate, calculate the mole ratio and find percent error. Theory: Mole relations: One mole (abbreviated mol) is equal to 6.02×10 23 molecular entities (Avogadro's number). Each element has a different molar mass depending on the weight of 6.02×10 23 of its atoms (1 mole). The total number of atoms of each element must be
concerned about the enhancement of SC values. Insufficient attention was paid to capacitance degradations of metal oxide/hydroxide materials at high current densities [118]. Our group previously reported the utilization of lyotropic liquid crystal (LLC) template in potentiostatic electrodeposition of Co(OH)2 which led to significant improvement in electrochemical performance [119]. Indium-tin oxide nanowire is known to possess excellent electrical properties and thermal stability [120, 121] which allows
Through data collection and analysis of the crash site, the investigation team has found the most accurate answers to the events of the plane crash. They have used empirical and molecular formulas to do so. An empirical formula is the lowest whole-number ratio of all of the elements in a compound. A molecular formula is the ratio of a molecule’s elements, sometimes it can be the empirical formula of the molecule. These terms were used to find the correct substances found on the plane crash and on
Hydrolysis of Oxoanions Nonmetals in positive oxidation states do not exist in aqueous solution as cations but rather as hydroxides or oxides. These species often act as oxo acids which ionize to form oxoanions in solution. The general form of an oxoanion is MOxy-. Since these oxoanions are quite different in their properties, Z2/r ratios for nonmetal cations do not give accurate predictions of their chemical behavior. A different approach is needed to determine what these elements will do when they
General Information about Urease Urease is an enzyme found abundantly within organisms such as plants, fungi, bacteria, invertebrates, and is also present within the soil. Its function is to convert the organic compound urea into ammonia and carbon dioxide. Within animals, urea is excreted as a waste compound through the metabolism of nitrogen-containing substances; urease is therefore not required within animals. For organisms such as plants, fungi, bacteria etc., urea serves as a source of nitrogen
Before studying the process of designing nature-based landscape services it is essential to understand the meanings of nature, landscape and peoples' interaction with nature, in order to understand all the benefits and importance of nature in human lives. This understanding will add special value to the reasons of why is it worth paying so much attention to nature theme and services to be provided in this environment. The word 'nature' is very widely used and it is very important to give exact definition
substances. So it is expected that there is not many chemical properties supporting it. Crystalline silica dioxide dissolves very slowly in alkaline solutions whereas its amorphous form reacts with alkalis at room temperature silicates of potassium or sodium. And when in contact with common substances like carbon and water you are likely to natural silica or quartz reacts with carbon at around 2000 degrees to give silicon and is known to be effected by others such as fluorine and chlorine. This reaction
rapidly. Commercial ammonia sensors make use of different techniques for ammonia detection and can be classified as metal oxide sensors, conducting polymer detectors, catalytic ammonia sensors and optical sensors. The ammonia gas sensors should be considered on basis of cost, maintenance, installation and most importantly specific sensors for the suitable application. Metal oxide ammonia gas sensors are most widely used and are usually made up of tin i.e. SnO2 sensors (Zakrzewska, 2001). These sensors
the metal oxides .The change in free energy, AG, can be expressed as [10]. Oxidation of iron has been investigated and well understood. When iron oxidized in air at higher or elevated temperature layers of oxide scale are formed on the upper surface of the metal. Composition of the scale layers depends on the temperature [11]. As per the iron oxygen phase diagram, there is no wustite (FeO) formed if the iron is oxidized below 570C. A two layer oxide scale of