National Academy of Science of Ukraine Frantsevich Institute for Problems of Materials Science

1. Manufacturing of the cordierite ceramics as a single-phase product is among enough difficult physicochemical and technological processes. Complexity of a cordierite (2MgO2Al2O35SiO2) synthesis with the high (95-98 vol. %) contents of a main phase determines by that cordierite forming oxides like magnesia, alumina, silicon oxide have high melting points - 2800, 2030 and 1700 оС accordingly, and sintering at 1600 оС. In the same a time the low temperature of incongruous melting cordierite - 1460 оС does not allow to elevate the temperature of its synthesis above 1400 оС. National Academy of Science of UkraineFrantsevich Institute for Problems of Materials Science Thermal resistant ceramic material (synthetic cordierite) Fundamental bases of the directed synthesis of cordierite with the low (2-3 vol. %) contents of extrinsic phases by solid-phase sintering in an interval of temperatures 1000-1380 оС and crystallization of quenched glasses are developed in IPMS NASU. The area of the compositions close to stochiometric cordierite, with min. low thermal expansion is determined. а б SYNTHETIC CORDIERITE AND PRODUCTS BASED ON IT Area of compositions of threefold system 2MgO2Al2O35SiO2, close to stochiometric cordierite, with min. low thermal expansion, made by: а) crystallization of quenched glasses; б) solid-phase synthesis. The manufacturing methods for new high spalling-resistant dense and porous (22-24, 45-50 %) ceramic materials with reduced TKLE (0,8-1,2 оС-110-6in limits 20-800 оС, fig. 2) and increased mechanical strength for carrying agents of catalysts and sooty filters are developed on the basis of synthetic cordierite. Properties of porous ceramics based on synthetic cordierite Dilatometric curves of the cordierite exploratory samples, obtained by a solid-phase synthesis (1), crystallization of quenched glasses (2), quartz glass (3), and a sample cut from the catalytic block of Сornіng Corporatіon production. Аuthors: Frantsevich Institute for Problems of Materials Science, NAS of Ukraine, Department 4, DoctorV. Pavlikov, Doctor V. Garmash, Phone. +380(44)4242001, e-mail:garmash@ipms.kiev.ua

2. CATALYTIC NEUTRALIZERS FOR AUTOMOBILES WITH GASOLINE ENGINE National Academy of Science of UkraineFrantsevich Institute for Problems of Materials Science The converter represents the synthetic cordierite ceramic block with cellular structure of the cylindrical form with volume from 1 litre. On a surface of internal channels the shallow layer of the secondary carrying agent from adamant is put, which improves in dozens of times (up to 15-16 m2/g) specific surface and ternary platinum-paladium-ruthenic catalyst. The contents of active components - platinum metals is 3,5 g on kg of the ceramic carrying agent. Complex catalyst with replacement of a part of platinum with oxide of rare-earth metal is developed and passes test. The catalytic converter intended for complex сleaning from CO, NOx, CxHy of exhaust gases of the automobiles using not ethylated variety of benzine. СО removal Results of the test performance catalytic converter at different temperatures IPMS Walker Linda Gobex СхНуremoval IPMS Walker Linda Gobex Аuthors: Frantsevich Institute for Problems of Materials Science, NAS of Ukraine, Department 4, DoctorV. Pavlikov, Doctor V. Garmash, Phone. +380(44)4242001, e-mail:garmash@ipms.kiev.ua

3. C CERAMIC PARTICULATE FILTER WITH CATALYTIC COATING National Academy of Science of UkraineFrantsevich Institute for Problems of Materials Science The filter represents the ceramic cylindrical monolyte with cellular structure and volume up to 3 litres. Material of the block is synthetic cordierite. On a surface of internal channels and pores the shallow layer of the secondary carrying agent and the catalyst on the basis of oxides of transition metals is put. 98 94 100 90 76 80 74 65 C C 60 o o C C 60 o C t=300 % o o t=385 o t=250 t=250 t=300 40 t=385 20 0 DNOx DD DCO Test results efficiency particulate filter with catalytic coating at different temperatures Аuthors: Frantsevich Institute for Problems of Materials Science, NAS of Ukraine, Department 4, DoctorV. Pavlikov, Doctor V. Garmash, Phone. +380(44)4242001, e-mail:garmash@ipms.kiev.ua

4. CERAMIC FILTERS FOR MELTS OF METALS National Academy of Science of UkraineFrantsevich Institute for Problems of Materials Science Filters withhoneycomb and cellular structure for refining (filtration) metal melts at a temperature operation up to 1650 ° C are based on synthetic mullite and mulite-zircon using domestic raw materials (kaolin, zircon, alumina). In combination with low temperature synthesis of mullite (1500-1550 ° C) ceramic filters based on mullite and mulite-zircon can be competitive in the CIS markets. Key performance of ceramic filters Аuthors: Frantsevich Institute for Problems of Materials Science, NAS of Ukraine, Department 4, DoctorV. Pavlikov, Doctor V. Garmash, Phone. +380(44)4242001, e-mail:garmash@ipms.kiev.ua