Cerium Sulfate Powder CAS 13550-47-5

In the selective oxidation reaction scenario of fine chemicals, it is widely recognized as a highly selective green oxidant, completely avoiding the industry pain points of heavy metal pollution and excessive oxidation of products caused by traditional dichromate and permanganate oxidants. In the oxidation reaction of aromatic compounds, toluene derivatives can be accurately oxidized into corresponding benzaldehyde products in a mild aqueous organic two-phase system, with a conversion rate of over 95% and a selectivity of aldehyde products exceeding 92%, almost without generating excessive oxidation of benzoic acid by-products.

The production data of a pharmaceutical intermediate enterprise shows that using it to replace traditional chromium salt oxidants in the production of p-chlorobenzaldehyde has increased the purity of the product from 98.5% to 99.8%, and reduced the amount of heavy metal hazardous waste generated during the production process by 98%, fully complying with the latest domestic chemical environmental protection emission standards. In the synthesis of steroid drugs, it is the preferred reagent for selective oxidation of allyl hydroxyl groups in steroid molecules.

It can accurately identify specific reaction sites on steroid molecules, efficiently oxidize the methylene group at the allyl position to a ketone group without damaging other sensory groups in the molecule, and the stereoselectivity of the reaction product exceeds 98%, greatly reducing the difficulty of separating and purifying subsequent chiral drugs. In the intermediate synthesis process of vitamin E, oxidation reaction is used to increase the yield of key intermediates by more than 15%, while avoiding the impact of chromium ion residue on the final drug quality in traditional processes. The product has successfully passed the pharmaceutical impurity standard certification in the European and American markets. In the synthesis scenario of dyes and optoelectronic functional materials.

The selective oxidative coupling reaction of aromatic amine compounds can efficiently synthesize high-performance azo dyes and organic optoelectronic materials as core intermediates. The reaction process does not introduce heavy metal impurities, and the impurity content of the produced optoelectronic materials is below ppm, fully meeting the high purity requirements of organic light-emitting diode (OLED) materials. The trivalent cerium sulfate powder generated after the reaction can also be regenerated into tetravalent cerium sulfate through a simple electrochemical oxidation process, achieving the recycling of oxidants. The overall atomic utilization rate of the process exceeds 90%, significantly reducing the comprehensive cost of fine chemical production.

Cerium sulfate hydrate is an efficient catalytic component in advanced oxidation processes for the treatment of industrial recalcitrant organic wastewater. The preparation of heterogeneous Fenton catalyst by loading cerium sulfate hydrate on porous diatomaceous earth carrier can significantly improve the pH range of traditional Fenton system. It can efficiently catalyze hydrogen peroxide to generate hydroxyl radicals in a wide range of pH 3-9, and rapidly degrade benzene ring and heterocyclic refractory organic compounds in printing and dyeing wastewater and pharmaceutical wastewater.

Actual engineering operation data shows that the advanced oxidation process with cerium sulfate based catalyst can achieve a COD removal rate of over 88% for printing and dyeing wastewater, which is 40% higher than the traditional iron-based Fenton process. At the same time, it does not generate a large amount of iron sludge hazardous waste, significantly reducing the cost of subsequent sludge disposal. In the advanced treatment of arsenic containing wastewater, cerium ions have become an efficient arsenic removal agent due to their special coordination adsorption ability for arsenic elements.

Tetravalent cerium ions can form stable chelating precipitates with trivalent arsenic and pentavalent arsenic in wastewater, while deeply removing residual trace arsenic elements through surface adsorption. After treatment, the arsenic content in wastewater can be reduced to below 0.01mg/L, far below the national emission limit of 0.05mg/L. Compared to traditional iron salt arsenic removal processes, the arsenic removal efficiency is increased by more than three times, and the resulting arsenic containing precipitate has a stable structure. The leaching toxicity of arsenic is much lower than the hazardous waste standard, avoiding the risk of secondary pollution.

In the deep purification scenario of drinking water, ceramic filters loaded with cerium sulfate hydrate can efficiently remove harmful impurities such as fluoride ions and lead ions in water. Cerium ions form stable cerium fluoride precipitates with fluoride ions, and the adsorption capacity of fluoride in water is more than 6 times that of ordinary activated alumina. This technology can reduce the fluoride content in drinking water in high fluoride areas to the national health standard range. Currently, this technology has been widely applied in rural drinking water safety projects in many high fluoride areas in northern China.

In the oxidation-reduction titration scenario of capacity analysis, cerium sulfate is a classic reference grade cerium volumetric reagent and an internationally recognized high-precision oxidation-reduction titration reference substance. The standard solution of cerium sulfate hydrate has an extremely stable oxidation-reduction potential and will not experience concentration drift after long-term storage. When titrating reducing substances such as ferrous, stannous, and iodide ions, the reaction process is smooth, the titration endpoint changes color sensitively, and the relative deviation of the measurement results can be controlled within 0.01%, far superior to the accuracy of potassium permanganate titration method.

In the detection of total iron content in iron ore in the metallurgical industry, a standard titration solution prepared with cerium sulfate powder is used to accurately determine the total iron content without the need for additional complex masking agents. The reproducibility of the detection results is much higher than that of the traditional potassium dichromate method, while completely avoiding the health hazards of experimental personnel and laboratory waste liquid pollution caused by chromium salt reagents. In the preparation scenario of standard substances for environmental monitoring, high-purity cerium sulfate hydrate is the preferred raw material for preparing cerium element standard solutions.

After drying at 105 ℃, cerium sulfate hydrate has a stable stoichiometric ratio and can be accurately prepared as a cerium element standard solution without the need for additional calibration. It is widely used for calibration of large analytical instruments such as inductively coupled plasma mass spectrometry (ICP-MS) and atomic absorption spectroscopy, and is an indispensable rare earth element standard substance in environmental monitoring and geological mineral detection laboratories. In the composition analysis of positive electrode materials for lithium batteries, cerium sulfate reference reagent can be used to accurately titrate the content of variable valence metal ions in positive electrode materials.

Helping enterprises to accurately control the nickel cobalt manganese element ratio of ternary materials and ensure the consistency of electrochemical performance of lithium batteries. In the quality control scenario of composition analysis of special glass, the standard titrant prepared with cerium sulfate hydrate can be used to accurately determine the content of ferrous impurities in the glass, precisely control the redox state of the glass, and provide reliable detection support for the stable optical performance of radiation resistant special glass.