Oxalic Acid hmanga Glyoxal Oxidation hman dan
Glyoxal hian reducibility chak tak a nei a, chuvangin oxidizing nitric acid chak tak hnathawh hnuaiah oxalic acid ah rang takin a oxidized thei a ni. Raw material supply, man, leh technology ang chi thil avang hian he method hian market competitiveness tha lo tak a nei a, industrialized a la ni lo.
Chu bakah, oxalic acid siamna atana siam dan dang pawh a awm a:
(1) Carbon dioxide siam dan: Carbon dioxide chu a inkar ah tihtlem hmasak a ni
CO2
tin, chutah chuan organic substance dang ah a inthlak leh thin. Oxalic acid hi carbon dioxide system hrang hrang electrochemical method leh γ-ray, ni êng emaw, high-pressure mercury lamp hmanga irradiate-a siam a ni.
(2) Cellulose tamna thil hmanga alkali tihthianghlim dan: Cellulose tamna thil (thing bawlhhlawh, buhfai, etc. ang chi) leh inorganic strong alkali inzawmkhawm chu 513–558 K-ah co-melted a ni a, 50% aia tam oxalate siam a ni. Oxalate crystal te chu crystallization hmangin an precipitate a, chutah chuan sulfuric acid hmangin oxalic acid siam zawh tawh chu an hmu chhuak a ni. Hetiang method hian oxalic acid siam dan awlsam tak a nei a, mahse single-pass conversion rate a hniam (35% aia tlem) a ni a, alkali hman a tam a, boruak bawlhhlawh a nasa hle bawk.
(3) Coal raw material siam dan: Peat chi hrang hrang atanga raw material atan siam a ni. Entirnan, oxalic acid hi nitric acid oxidation hmangin Sphagnum leh Polytrichum chi peat atanga siam a ni. Reaction hi 343 K-ah darkar 8–9 chhung an ti a, yield chu 95% thleng a ni. Coal tar ang chi raw material hmanga oxalic acid siam a nih chuan a thar chhuah pawh 51% a tling pha bawk.

A rilru a buai em em a, a rilru a hah em em bawk a