Khoom noj khoom haus Additive SAPP

Khoom noj khoom haus ntxiv Sodium Acid Pyrophosphate (SAPP) yog ib qho kev siv cov kua qaub, siv hauv kev ua cov qhob cij, ncuav mog qab zib, shortbread, khob noom cookie thiab lwm yam khoom noj. Kev npaj ntawm SAPP feem ntau suav nrog cov kauj ruam hauv qab no:

1. Synthesis ntawm silica: Thaum tshav kub kub silicate thiab thee nyob rau hauv lub kaw chamber yuav ua rau oxidation-txo cov tshuaj tiv thaiv los tsim silica.

2. Synthesis ntawm pyrophosphoric acid: cua sov phosphoric acid thiab thee los tsim pyrophosphoric acid.

3. Synthesis ntawm tetrahydrofuran: react thee nrog huab cua ntawm qhov kub thiab txias kom tau carbon monoxide thiab carbon dioxide, thiab tom qab ntawd hnov ​​​​mob nrog hydrogen los tsim tetrahydrofuran.

4. Synthesis ntawm SAPP: Pyrophosphoric acid, silicon dioxide, tetrahydrofuran, dej, hydrochloric acid thiab lwm yam tshuaj yog tov thiab reacted los tsim SAPP.

Txoj kev npaj ntawm SAPP yog siv cov tshuaj tiv thaiv ntawm pyrophosphoric acid thiab silicon dioxide los tsim pyrosilicic acid thiab nws cov polymer. SAPP tswj cov degree ntawm polymerization thiab molecular qauv los ntawm kev tswj cov tshuaj tiv thaiv tej yam kev mob, xws li kub, pH, tshuaj tiv thaiv lub sij hawm thiab reactant ntxiv ib ntus, thiaj li yuav tau txais cov khoom uas muaj tej yam khoom.