PDF Publication Title:
Text from PDF Page: 002
3 and treated again with fresh hot silver nitrate solution for?veminutes. Theproductwas?ltered,washedwith wateranddried. A ?vegrarnportionofthiszeolitewas treated with a solution of 10.96 grams of tetramethyl arn moniumchloridein100millilitersofwater. Thesolids were ?ltered, washed with concentrated ammonium hy droxideandanalyzed. Analysisindicatedabout63mole percent hydrogen exchange of the zeolite. In the examples just cited, there was litle, if any, en~ try by the cation of the treating solution into the zeolite 10 crystalstructure. However,itisnotnecessarytopro hibit exchange by these cations, but only to hinder it in such a manner that hydrogen ions may successfully competefortheexchangesites. Thatsubstantialhydro 4 and washed with concentrated ammonium hydroxide un tilnosilverionscould‘bedetected. Thesampleswere again washed with 700 cubic centimeters of distilled water,andthepH aftersuchwashingwasstilfoundto be9. Thehydrogenexchangedzeolitesampleswerethen dried overnight at room temperature in a dark atmos phere,andanalyzedforpercentAg. Themolepercent hydrogen exchange was then calculated with the follow ing results: gen ion-exchange is possible under such conditions is 15 Sodium zeoliteY.._ H exchg. 20.0 35.8 44.0 28.O Ag left 35.0 28.2 16.5 39 evidencedbythe‘followingexample. Thesilver-exchangedformofsodiumzeoliteX (de Potassium zeolite L Sodium-potassium zeolite 'l‘_______________ scribed and claimed in pending application Serial No. U.S. Patent 2,950,952. Samples of these materials were ?rst sieved by pas sage through a 40 mesh screen. Next seven gram por ions in a concentration not substantially greater than the hydrogen ion concentration of water, (2) anions which form precipitates with said silver cations of said crystal line zeolite and (3) only cations which enter said three 3,059,993 Although preferred embodiments of the invention have treating40gramsofsodiumzeoliteXwithasilvernitrate20 beendescribedindetail,itiscontemplatedthatmodi?ca 400,389, now U.S. Patent 2,882,244) Was prepared by solution (34 grams of silver nitrate and 0.85 gram of sodium nitrate in 200 milliliters of water) at room tem peraturefor30‘minutes. Thematerialwas?lteredand thetreatmentrepeated. Thezeolitewas?ltered,washed with water and dried. A ?ve gram portion of the silver zeolite X was treated with a solution comprising 10.96 grams of tetrarnethyl ammonium chloride in 100 milliliters of water. The solids were ?ltered, washed with concentrated ammonium hydroxide,driedandanalyzed. About63molepercent hydrogen exchange and about 6 mole percent tetramethyl ammonium cation exchange took place. As a further illustrations of the present invention, hy drogen ion exchanged zeolites were prepared from the fol lowing materials: erionite, sodium-potassium zeolite T, sodium zeolite Y and potassium zeolite L. Zeolite Y is described and claimed in U.S. patent application Serial Nos. 728,057, now abandoned, and 862,062, ?led respectively on April 14, 1958, and De cember28,1959. Zeolite L is described and claimed in U.S. patent ap plication Serial No. 711,565, now abandoned, ?led Janu~ ary 28, 1958. tions of the method may be made and that some features may be employed without others, all within the spirit and scope of the invention. This is a continuation-in-part application of copending 25 application Serial No. 578,597, ?led April 17, 1956, in the name of R. M. Barrer and D. C. Sammon, now abandoned. What isclaimed is: 1. A method for hydrogen ion-exchanging a three-di mensional crystalline zeolite containing silver cations com prising bringing said crystalline zeolite into intimate con tact with an aqueous solution containing (1) hydrogen ions in a concentration not substantially greater than the hydrogen ion concentration of water, (2) anions which form precipitates with said silver cations of said crystal line zeolite and (3) only cations which permit hydrogen ions in said aqueous solution to compete successfully for at least a part of the exchange sites in said crystal line zeolite, exchanging hydrogen ions in said solution for 40 atleastapartofsaidsilvercations,andprecipitatingat least a part of said silver cations in said zeolite. 2. A method for hydrogen ion-exchanging a three dimensional crystalline zeolite containing silver cations comprising bringing said crystalline zeolite into intimate Zeolite T is described and claimed in U.S. patent ap plicationSerialNo. 733,819,?ledMay 8,1958,now 45 contactwithanaqueoussolutioncontaining(1)hydrogen tions of each were slurried with 300 cubic centimeter por tionsofal-molaraqueoussolutionofsilvernitrate,and 50 dimensionalcrystallinezeolitelesseasilythanhydrogen the mixture was agitated by means of a magnetic stirrer foraperiodoftwohours. Theproductswere?ltered andwashedwithdistilledwater. Thesampleswerethen reslurried with 300 cubic centimeter portions of a l-molar ions in said aqueous solution, exchanging hydrogen ions in said solution for at least a part of said silver cations, and precipitating at least a part of said silver cations in said zeolite. aqueoussolutionofsilvernitrateandstirredwiththesame55 3.A method‘forhydrogenion-exchangingathree magneticstirrerforanothertwo-hourperiod. Theprod ucts were again ?ltered and 150 cc. portions of the 1 molar silver nitrate solution were passed over the ?lter cakeofeachsample. Thesamplewerenextwashedfree of nitrate ions with distilled water and placed in a dark 60 the hydrogen ion concentration of water, (2) anions location overnight for drying. The pH of the samples was 6-7. The previously described silver exchanged zeolites were which form precipitates with said silver cations of ‘said crystalline zeolite and (3) only cations which have maxi mum dimensionsoftheminimumprojectedcross-sections large enough to hinder entrance of said cation into the next hydrogen exchanged in the following manner: Five gramsofeachsampleexceptthesilverexchangederionite 65 pores of said crystalline zeolite, exchanging hydrogen ions in said solution for at least a part of said silver cations, and precipitating at least a part of said silver cations in said zeolite. sample were treated with a solution of 10.96 grams of tetramethyl ammonium bromide dissolved in 100 cubic 70 dimensional crystalline zeolite containing silver cations was separately treated ‘with a solution of 10.96 grams of tetramethyl ammonium chloride dissolved in 100 cubic centimetersofdistilledwater. Fivegramsoftheerionite 4. A method for hydrogen ion-exchanging a three centimeters of water. The resulting slurries were al lowedtosetuntilaconstantpHvaluewasobtained. The ?nal pH of all samples was 8—9 except zeolite L which comprising bringing said crystalline zeolite into intimate contact with an aqueous solution containing (1) hydro gen ions in a concentration not substantially greater than the hydrogen ion concentration of water, (2) anions which was 10 as determined by pH paper. The hydrogen ex changed samples Were next ?ltered, washed with water, 75 form precipitates with said silver cations of said crystal Material Erionite____________ Mole Mole percent percent dimensional crystalline zeolite containing silver cations comprising bringing said crystalline Zeolite into intimate contact with an aqueous solution containing (1) hydrogen ions in a concentration not substantially greater thanPDF Image | HYDROGEN ION EXCHANGE OF ZEOLITES
PDF Search Title:
HYDROGEN ION EXCHANGE OF ZEOLITESOriginal File Name Searched:
US3059993.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |