Ɔkwan a wɔfa so de Oxalic Acid Carbon Monoxide bom
Saa kwan yi mfiase no de palladium ne kɔbere nkyene dii dwuma sɛ nneɛma a ɛma nneɛma yɛ kɛse, na ɛyɛɛ nsu-fase coupling reaction a ɛne carbon monoxide, oxygen, nsa, ne nitric acid a wɔafrafra wɔ 8–11 MPa ne 90–100 °C. Adeyɛ no di kan ma wonya oxalate ester, na afei wɔde nsu gu mu wɔ ɔhyew tebea mu ma ɛyɛ oxalic acid ne nsa a ɛne no hyia.
Saa kwan yi wɔ catalyst nhyehyɛe biako, dwumadi a ɛkɔ soro, paw pa, ɛnyɛ den sɛ wɔbɛsan anya, nneɛma a ɛho tew kɛse, ne efĩ a ɛba fam wɔ nneɛma a wɔyɛ mu. Nanso, ɛwɔ ahwehwɛde akɛse a ɛfa carbon monoxide a ɛho tew, nea wɔde di dwuma kɛse, nneɛma a ɛma nneɛma yɛ kɛse a ne bo yɛ den, ne sika a wɔde hyɛ mu kɛse ho.
Sɛ wɔde Pd/C di dwuma sɛ ade a ɛma nneɛma yɛ kɛse a, wɔde carbon monoxide ne nitrite ester bom ma ɛyɛ oxalate ester wɔ 130 °C ne wim nhyɛso mu, na nitric oxide yɛ ade a ɛka ho. Wɔnam oxalate ester no a wɔde nsu gu mu so na wonya oxalic acid ne nsa a ɛne no hyia no. Wɔsan de nsa a wɔatetew mu no yɛ oxidation ma ɛyɛ nitrite ester, a wobetumi asan de adi dwuma bio.
Fujian Institute of Structure of Matter, China Academy of Sciences, ayɛ nhwehwɛmu wɔ ratio a raw materials ne ahunmu ahoɔhare tebea ahorow wɔ catalytic synthesis of dimethyl oxalate wɔ nhwehwɛmu a catalysts ma wim nhyɛso catalytic coupling of CO ne oxalic acid, na wɔapaw adeyɛ tebea horow a ɛfata. Pd (2.0%)/α-Al2O3 catalyst a wɔatu mpɔn no nyaa ahunmu-bere aba a ɛyɛ 999 g/L·h wɔ tebea horow a wim nhyɛso, 140 °C, CO/CH3ONO=1.5, ne ahunmu ahoɔhare 3000/h mu. Asoɛe no ne Fujian Petrochemical Design Institute ne Fujian Nanqing Ammonia Plant yɛɛ biako yɛɛ 100 t/a sɔhwɛ a wɔde bɛsan anya CO afi ammonia kɔbere a wɔde ayɛ aduru mu, wim nhyɛso a wɔde yɛ dimethyl oxalate a ɛma nneɛma yɛ kɛse, ne nsu mu a wɔde bɛpaapae mu ayɛ no oxalic acid.
Sɛ wɔde toto ɔkwan a wɔfa so yɛ nsu mu no ho a, saa kwan yi wɔ paw a ɛkɔ soro, ɔkwan a ɛyɛ mmerɛw, nneɛma a wɔyɛ no ho tew kɛse, na ɛho ka sua. Ebetumi de abɔde mu mframa anaa fango adi dwuma sɛ nneɛma a wɔde yɛ nneɛma, na ebetumi nso de carbon monoxide a wonya fi ammonia kɔbere scrubbing anaa yellow phosphorus fononoo, fononoo a ɛyɛ hyew, ne converter tail gas mu nso adi dwuma sɛ carbon monoxide gas fibea. Bere koro no ara mu no, ebetumi ama wɔanya nneɛma a wɔde yɛ ethylene glycol a ne bo nyɛ den na wɔde oxalate ester ayɛ biako sɛ ntamgyinafo.

Shandong Pulisi Nnuruyɛfo Adwumakuw, Ltd. | Oxalic Acid a Ɛyɛ Fɛ a Wɔde Ma
Wɔde sii hɔ wɔ afe 2006 mu no, Pulisi Chemical yɛ adwuma titiriw wɔ oxalic acid a ɛho tew kɛse (CAS 144-62-7) a ɛne amanaman ntam gyinapɛn ahorow a wɔde kɔ amannɔne a ɛfa mfiridwuma ne nea wɔayɛ no yiye nyinaa ho hyia. Yɛn adwumayɛbea a egyina Zibo so no hwɛ hu sɛ wɔhwɛ nneɛma pa so denneennen, a oxalic acid a ɛyɛ mfiridwuma mu de hoahoa ne ho sɛ anyɛ yiye koraa no ɛho tew 96% na nea wɔayɛ no yiye no du ahotew 99.6% —a edi mfiridwuma mu ahwehwɛde ahorow ho dwuma.
Yɛn oxalic acid no da nsow wɔ ne nsuo a ɛtumi nwura mu yie ne nnuru a ɛgyina pintinn no ho, na ɛyɛ adwuma sɛ ade a wɔde yɛ adwuma wɔ nnwuma ahodoɔ mu. Wɔ dade a wɔyɛ mu no, eyi nkannare ne oxide a ɛwɔ dade, aluminium, ne kɔbere mu no fi hɔ yiye, na ɛma nneɛma a wɔde kata so no bata ho kɛse ma kar, ahunmu, ne anyinam ahoɔden a wɔde yɛ adwuma. Wɔ ntama mu no, ɛyɛ adwuma sɛ ade a ɛmma nneɛma nsɛe nneɛma a atwa yɛn ho ahyia na ɛma ntama kɔla yɛ mmerɛw na ɛhyerɛn.
Bio nso, wɔde di dwuma kɛse wɔ nnuru a wɔde yɛ nneɛma, nnua a wɔyɛ, dade a wɔntaa nhu a woyi, ne nsu a wɔde yɛ nneɛma mu. Certified ne ISO 9001 ne EU REACH, yɛde standardized 25kg packaging ma bulk orders, hwɛ hu sɛ ahotoso wiase nyinaa de ma. Sɛ́ ɛyɛ mfiridwuma mu nneɛma akɛse anaasɛ nneɛma a ɛkorɔn a wɔde di dwuma no, Pulisi Chemical de mmoa a ɛyɛ papa ne adwumayɛfo mmoa a ɛkɔ so daa ma.