WebCONSTITUTION:A high-purity dicycloepentadiene containing 95-99wt.% of endo isomer and solid at room temperature is brought into contact with one or more catalysts selected from activated clay, acid clay, faujasite, X-type zeolite, Y-type zeolite, offretite/erionite, mordenite, ferrierite, silica-alumina and strongly acidic ion exchange resin at 40-160 deg.C for 0.5 … Web6 mrt. 2024 · Interestingly, by comparing the degree of change in hydrogen crossover between the dry and hydrated membranes, it was possible to extract semi-qualitative information about the membrane’s internal ion exchange channels. The results suggest that non-aromatic Nafion series exhibit lower tortuosity than rigid aromatic BPSH series …
History, Introduction, and Kinetics of Ion Exchange Materials
WebA single column ion chromatographic method for the determination of sulfide, sulfite, sulfate and thiosulfate was developed. It uses an anion exchange column (Waters, IC-Pak A) and a borate-gluconate buffer at pH 8.5 that contains EDTA and ascorbic acid to prevent sulfite oxidation. This eluent has relatively low background values for both conductivity and … WebIon-exchange chromatography (IEC) is one of the most frequently used techniques for the purification of proteins and other biomolecules. It is based on the different degrees of … ctg webmail login
Isomerization of dicyclopentadiene (1990) Nakamura Tomizo 5 …
WebThe effect of framework Al content on the number of framework Al atoms on the surface of (Al)MCM-41 channels and the distribution of these Al atoms among single Al atoms and various Al–Si–Al and Al–Si–Si–Al pairs was investigated. The number of framework Al atoms on the wall surface was characterized by the ion exchange capacity for Na+ ions, … WebEffective ion exchange for challenging water-treatment needs. Ion exchange (IX) is the reversible interchange of ions between a solid and a liquid such as water. Ion exchange … WebIon exchange materials are capable of exchanging soluble cations and ions with electrolyte solutions and transferring them into sludge. Ion exchange resin can be … earth gigs