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- W2379728181 abstract "Na OH-Na_2CO_3 mixed sub-molten salt was used to decompose K-feldspar resulting in an alkaline filtrate and a filter residue, namely cancrinite. The potassium carbonate( K_2CO_3) and aluminosilicate residues were obtained after carbonating the alkaline filtrate with carbon dioxide. Then the aluminosilicate residues were used to synthesize zeolite W after adjusting the ratio of component by adding KOH,Al( OH)_3and H_2 O. Further the effects of the ratio of Na_2CO_3 to the total amount of alkali,reaction temperature and time on the decomposition of potassium feldspar were studied. The results show that the dissolution rate of K~+is up to 95. 33wt% and cancrinite can be obtained under the condition of the ratio of Na_2CO_3 to the total amount of alkali 1 /2,reaction temperature 200 ℃ and the reaction time 4h. Then well crystallized zeolite W is hydrothermally synthesized from aluminosilicate residues with a formulation of K_2 O / Si O2= 1. 0,Al_2O_3/ Si O2= 0. 067,H_2 O / Si O_2= 45,followed by aging at 30 ℃ for 2h,and crystallizing at 150 ℃ for 24 h." @default.
- W2379728181 created "2016-06-24" @default.
- W2379728181 creator A5075071364 @default.
- W2379728181 date "2015-01-01" @default.
- W2379728181 modified "2023-09-23" @default.
- W2379728181 title "Synthesis of Cancrinite and Zeolite W from K-feldspar by Mixed Sub-molten Salt Method" @default.
- W2379728181 hasPublicationYear "2015" @default.
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