Oxalic Acid Carbon Monoxide Coupling Method
Yore maeni ugam utiyo ku palladium man copper salts calu catalysts, man utimo liquid-phase coupling reaction pa carbon monoxide, oxygen, alcohol, man dilute nitric acid i 8-11 MPa man 90-100 °C. Lembe ma jutimo eca wok ku oxalate ester, ma edoko hydrolyzed i thenge mi lyethu mi yubu oxalic acid man kongo ma rwate.
Yore eni utiye ku yore acel mi nyayu piny, tic ma lee, yero maber, dwoko piny ma yot, leng pa piny ma juyubu, man pollution ma nok. Ento, etiye ku yeny madit pi bedo maleng pa carbon monoxide, tic ma lee, catalysts ma wel migi tek, man lim madwong.
Ni tiyo ku Pd/C calu catalyst, carbon monoxide ku nitrite ester gicokiri pi yubu oxalate ester i 130 °C man atmospheric pressure, ku nitric oxide calu by-product. Oxalic acid man kongo ma rwate kudu juyubu ku hydrolyzing oxalate ester. Jam kongo ma jupoko judwoko nitrite ester, ma jucopo tiyo kudu kendu.
Fujian Institute of Structure of Matter, Chinese Academy of Sciences, utimu sayusac ikum ratio pa piny ma jutiyo kudu man kite ma rwom pa ngwec pa piny iwi rwom pa dimethyl oxalate i sayusac pa catalysts pi rwom pa CO ku oxalic acid, man lembe ma juyeru. Pd (2.0%)/α-Al₂O₃ catalyst ma juyubu maber unwangu rwom pa 999 g/L·h i thenge mi yamo, 140 °C, CO/CH₃ONO=1.5, man ngwec pa 3000/h. Kabedo ne timo tic karacelu ku Fujian Petrochemical Design Institute man Fujian Nanqing Ammonia Plant pi timo 100 t/a pi dwoko CO kud i synthetic ammonia copper scrubbing, atmospheric pressure catalytic synthesis of dimethyl oxalate, man hydrolysis to oxalic acid.
Ka juporo ku yore mi liquid-phase, yore eni utiye ku rwom ma malo mi yero, yore mayot, leng pa piny, man wel piny ma nok. Ecopu tiyo ku yamu ma wok kud i ngom nyo makaa calu piny ma jutiyo kudu, man ecopu tiyo ku carbon monoxide ma juwodho kud i ammonia copper scrubbing nyoke yellow phosphorus furnace, blast furnace, man converter tail gas calu carbon monoxide gas source. I saa marom, ecopu mio piny ma yot pi yubu ethylene glycol man yubu piny acel ku oxalate ester calu piny ma ikin piny.

Shandong Pulisi Chemical Co., Ltd. | Jami Oxalic Acid maber
Juyike i 2006, Pulisi Chemical timo tic ku oxalic acid ma leng (CAS 144-62-7) ma lubu cik mi ng'om zoo pi wil man wil ma leng. Kabedo mwa mi yubu piny ma Zibo-based uketho yub maber, ku oxalic acid ma rwom pare lapiny ma rwom pare leng ma romo 96% man maleng ma romo 99.6%—ma romo ku yeny matung tung mi rwom ma malu.
Oxalic acid mwa ucungo pi bedo maber man bedo maber pa kemikol, ma tiyo calu piny ma jutiyo kudu i yore matung tung. I tic mi cuma, ewotho maber man ewodho lum man oxide layers kud i steel, aluminum, man copper, ma medo kero pa coating pi mutukari, aerospace, man electroplating. I bongo, etiyo calu piny ma nyayu ler man rangi, ma weko rangi pa bongo bedo maber man maleng.
Mi medo, jutiyo kudu lee i yubu yath, yubu yen, kwanyo cuma ma nyai ungo, man yubu pii. Juyike ku ISO 9001 man EU REACH, wabe mio piny ma pek pa 25kg pi wil madwong, ma weko wabe mio piny maber i ng'om zoo. Kadi bed ni pi yubu piny madongo nyo tic madongo, Pulisi Chemical mio kony maber man maber.