{"id":4026,"date":"2023-05-10T15:11:09","date_gmt":"2023-05-10T15:11:09","guid":{"rendered":"https:\/\/longchangchemical.com\/?post_type=product&p=4026"},"modified":"2026-05-08T02:59:54","modified_gmt":"2026-05-08T02:59:54","slug":"4-methoxyphenol-cas-150-76-5","status":"publish","type":"product","link":"https:\/\/longchangchemical.com\/tr\/product\/4-methoxyphenol-cas-150-76-5\/","title":{"rendered":"Hidrokinon \/ 4-Metoksifenol CAS 150-76-5"},"content":{"rendered":"

Hidrokinon \/ 4-Metoksifenol CAS 150-76-5<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
E\u015fyalar<\/td>\nStandart<\/td>\n<\/tr>\n
G\u00f6r\u00fcn\u00fc\u015f<\/td>\nBeyaz kristal pul<\/td>\n<\/tr>\n
Hydroquinone(123-31-9\uff09%<\/td>\n\u22640.05<\/td>\n<\/tr>\n
\u00c7alkalama Kal\u0131nt\u0131s\u0131%<\/td>\n\u22640.01<\/td>\n<\/tr>\n
Kurutma Kayb\u0131%<\/td>\n\u22640.3<\/td>\n<\/tr>\n
Erime Noktas\u0131 \u2103<\/td>\n54-56.5<\/td>\n<\/tr>\n
A\u011f\u0131r Metal%<\/td>\n\u22640.001<\/td>\n<\/tr>\n
APHA<\/td>\n\u226410<\/td>\n<\/tr>\n
Hidrokinon Dimeteter<\/td>\n\u00c7\u0131k\u0131\u015f yap\u0131lmad\u0131<\/td>\n<\/tr>\n
\u0130\u00e7erik%<\/td>\n\u226599.5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

4-Metoksifenol Kullan\u0131m\u0131<\/strong><\/p>\n

1. Esas olarak polimerizasyon inhibit\u00f6rleri, ultraviyole inhibit\u00f6rleri, vinil monomerler i\u00e7in boya ara maddeleri olarak ve ayr\u0131ca g\u0131da ya\u011flar\u0131 ve kozmetik antioksidan, BHA sentezi i\u00e7in kullan\u0131l\u0131r.<\/p>\n

2. \u0130la\u00e7, parf\u00fcm ve pestisit gibi ince kimyasal \u00fcr\u00fcnlerin \u00f6nemli bir ara maddesidir. polimer inhibit\u00f6r\u00fc, ya\u015flanma kar\u015f\u0131t\u0131 ajan, plastikle\u015ftirici ve benzeri olarak da kullan\u0131labilir. esas olarak akrilonitril, akrilik asit ve esteri, metakrilik asit ve esteri ve di\u011fer alil monomerler polimerizasyon inhibit\u00f6rleri \u00fcretmek i\u00e7in kullan\u0131l\u0131r. en b\u00fcy\u00fck avantaj\u0131, kullan\u0131ld\u0131\u011f\u0131nda p-hidroksifenil eteri \u00e7\u0131karmadan do\u011frudan polimerizasyona dahil olabilmesidir. ya\u015flanma kar\u015f\u0131t\u0131 ajan, plastikle\u015ftirici ve g\u0131da katk\u0131 maddesi (BHA) sentezi olarak da kullan\u0131l\u0131r.<\/p>\n

3. \u00c7\u00f6z\u00fcc\u00fc olarak kullan\u0131l\u0131r. Akrilik asit ve akrilonitril monomer polimerizasyon inhibit\u00f6rleri, Ultraviyole inhibit\u00f6rleri, Antioksidanlar, Boya haz\u0131rlama.<\/p>\n

4. \u00c7\u00f6z\u00fcc\u00fc olarak kullan\u0131l\u0131r. Vinil monomerler i\u00e7in bir polimerizasyon inhibit\u00f6r\u00fc olarak; Ultraviyole inhibit\u00f6rleri; Boya ara \u00fcr\u00fcnleri ve yenilebilir ya\u011flar\u0131n ve kozmetiklerin sentezi i\u00e7in kullan\u0131lan antioksidan BHA (3-tert-butil -4-hidroksifenil eter) En b\u00fcy\u00fck avantaj\u0131, MEHQ ile eklenen monomerin di\u011fer monomerlerle kopolimerize edilirken \u00e7\u0131kar\u0131lmas\u0131na gerek olmamas\u0131, ancak \u00fc\u00e7l\u00fc ile do\u011frudan kopolimerize edilebilmesi ve ayr\u0131ca ya\u015flanma kar\u015f\u0131t\u0131 ajan ve antioksidan olarak kullan\u0131labilmesidir.<\/p>\n

 <\/p>\n

4-Metoksifenol Paketleme ve Nakliye<\/strong><\/p>\n

Ambalaj: 25kg\/karton bidon<\/p>\n

Teslimat: deniz veya hava yoluyla<\/p>\n

 <\/p>\n

4-Metoksifenol Depolama<\/strong><\/p>\n

Serin, kuru ve havaland\u0131r\u0131lm\u0131\u015f depoda oksidanlardan uzakta saklan\u0131r.<\/p>\n

\u015eimdi Bize Ula\u015f\u0131n!<\/b><\/strong><\/h2>\n

Fiyata ihtiyac\u0131n\u0131z varsa, l\u00fctfen a\u015fa\u011f\u0131daki formda ileti\u015fim bilgilerinizi doldurun, genellikle 24 saat i\u00e7inde sizinle ileti\u015fime ge\u00e7ece\u011fiz.<\/b><\/strong>\u00a0Bana e-posta da g\u00f6nderebilirsiniz info@longchangchemical.com<\/a><\/span> \u00c7al\u0131\u015fma saatleri i\u00e7inde (8:30 - 6:00 UTC+8 Pzt.~Sat.) veya h\u0131zl\u0131 yan\u0131t almak i\u00e7in web sitesi canl\u0131 sohbetini kullan\u0131n.<\/b><\/strong><\/h4>\n

<\/p>\n

Dihidroksibenzenin izomerizasyonu<\/strong><\/h2>\n

Dihidroksibenzenler, benzen halkas\u0131na ba\u011fl\u0131 iki hidroksil grubuna (-OH) sahip aromatik bile\u015fiklerin bir s\u0131n\u0131f\u0131d\u0131r. Bu molek\u00fcller farmas\u00f6tikler, zirai kimyasallar, malzeme bilimi ve do\u011fal \u00fcr\u00fcn sentezi gibi alanlarda \u00f6nemli rol oynamaktad\u0131r. \u00d6rne\u011fin, katekol (1,2-dihidroksibenzen) biyonik yap\u0131\u015ft\u0131r\u0131c\u0131larda, korozyon \u00f6nleyicilerde ve ila\u00e7 sentezinde; resorsinol (1,3-dihidroksibenzen) ila\u00e7 end\u00fcstrisinde koruyucu olarak ve kau\u00e7uk end\u00fcstrisinde re\u00e7ine olarak; fenilfenol (1,4-dihidroksibenzen) ise foto\u011fraf\u00e7\u0131l\u0131k, kozmetik ve polimerizasyon inhibit\u00f6r\u00fc gibi \u00e7ok \u00e7e\u015fitli uygulamalarda kullan\u0131lmaktad\u0131r. Dihidroksibenzen i\u00e7in k\u00fcresel y\u0131ll\u0131k talep 200.000 tonu a\u015fmaktad\u0131r. Bununla birlikte, geleneksel end\u00fcstriyel \u00fcretim s\u00fcre\u00e7leri karma\u015f\u0131kt\u0131r, ayr\u0131\u015ft\u0131r\u0131lmas\u0131 zordur ve hedef \u00fcr\u00fcnler i\u00e7in daha az se\u00e7icidir. \u00d6rne\u011fin, katekol ve hidrokinon sentezi i\u00e7in end\u00fcstriyel yol, asit veya zeolit kataliz\u00f6rleri taraf\u0131ndan katalize edilen hidrojen peroksit ile fenol\u00fcn hidroksilasyonu ile olu\u015fturulur (\u015eekil 1). Bu i\u015flem, fenol\u00fcn a\u015f\u0131r\u0131 oksidasyonunu \u00f6nlemek i\u00e7in y\u00fcksek bir fenol\/hidrojen peroksit oran\u0131 (~20) gerektirir. Ancak, bu proses yolu ile elde edilen dihidroksibenzen genellikle daha az se\u00e7icidir ve hidrokinon verimi, katma de\u011feri y\u00fcksek kate\u015follerden (katekoller) \u00e7ok daha y\u00fcksektir. Bunun ba\u015fl\u0131ca nedenleri a\u015fa\u011f\u0131daki gibidir: 1) Fenol, asitler ve polimerler olu\u015fturmak \u00fczere kolayca a\u015f\u0131r\u0131 oksitlendi\u011finden, bu durum nispeten d\u00fc\u015f\u00fck dihidroksibenzen se\u00e7icili\u011fine yol a\u00e7ar. 2) Fenol\u00fcn hidroksilasyonu daha az regioselektiftir ve \u00fcr\u00fcn y\u00fcksek katma de\u011ferli kate\u015folden daha fazla hidrokinon i\u00e7erir. Bu sorunlar\u0131 \u00e7\u00f6zmenin anahtar\u0131, dihidroksibenzeni se\u00e7ici olarak ba\u015fka bir izomere d\u00f6n\u00fc\u015ft\u00fcrmenin ve b\u00f6ylece \u00fcr\u00fcn se\u00e7icili\u011fi ve a\u015f\u0131r\u0131 \u00fcretim zorluklar\u0131n\u0131 ele alman\u0131n bir yolunu bulmakta yatmaktad\u0131r. \u00d6rne\u011fin, ZSM-5 zeolitlerinde ksilenlerin izomerizasyonu, daha az kullan\u0131lan m- ve o-ksilenlerin polyester \u00f6nc\u00fcs\u00fc olarak talebi kar\u015f\u0131lamak i\u00e7in paraksilene d\u00f6n\u00fc\u015ft\u00fcr\u00fclmesiyle elde edilebilir. Burada, 400 \u00b0C'de \u00e7\u00f6z\u00fcc\u00fc olarak su ile hidrojen atmosferinde Pt\/ZSM-5 kataliz\u00f6rleri \u00fczerinde dihidroksibenzenin izomerizasyonunu rapor ediyoruz. Optimize edilmi\u015f kataliz\u00f6r, hidrokinonun 74% se\u00e7icilik ve 50%'ye kadar verimle katekole izomerizasyonunu sa\u011flad\u0131. Mekanistik \u00e7al\u0131\u015fmalar, ara karbonlu tortunun (kok) izomerizasyon reaksiyonunda \u00f6nemli bir rol oynad\u0131\u011f\u0131n\u0131 g\u00f6stermi\u015ftir.<\/p>\n

 <\/p>\n

Dihidroksibenzenlerin izomerizasyon \u00f6zellikleri<\/p>\n

Dihidroksibenzenlerin izomerizasyonu, Pt i\u00e7eren ve i\u00e7ermeyen H-ZSM-5 zeolitleri kullan\u0131larak sabit yatakl\u0131 bir reakt\u00f6rde ger\u00e7ekle\u015ftirilmi\u015ftir. Kate\u015fol, hidrokinon veya resorsinol suda \u00e7\u00f6z\u00fclm\u00fc\u015f ve 400 \u00b0C'de bir hidrojen ak\u0131\u015f\u0131 i\u00e7inde kataliz\u00f6r katman\u0131na beslenmi\u015f, ard\u0131ndan reakt\u00f6r \u00e7\u0131k\u0131\u015f\u0131ndaki s\u0131v\u0131 \u00fcr\u00fcn analiz edilmi\u015ftir. Reaksiyona giren dihidroksibenzene ba\u011fl\u0131 olarak, reaksiyonun ana \u00fcr\u00fcnleri izomerizasyon \u00fcr\u00fcnleri olarak katekol ve hidrokinon ve dehidroksilasyon \u00fcr\u00fcn\u00fc olarak fenol olmu\u015ftur (\u015eekil 2a, \u015eekil S1, SI). Kataliz\u00f6r\u00fcn aktivitesi ilk a\u015famada y\u00fcksekti, ancak aktif b\u00f6lgelerin deaktivasyonu nedeniyle zamanla kademeli olarak azald\u0131 (\u015eekil 2d, \u015eekil S2, SI). Katekol\u00fcn 0,2% Pt\/ZSM-5(30) \u00fczerinde zaman i\u00e7inde izomerizasyonunun analizi, fenol ve hidrokinon i\u00e7in se\u00e7icili\u011fin ba\u015flang\u0131\u00e7 a\u015famas\u0131nda 15%'de benzer oldu\u011funu g\u00f6stermi\u015ftir. S\u0131v\u0131 faz \u00fcr\u00fcn\u00fcn\u00fcn d\u00fc\u015f\u00fck se\u00e7icili\u011fi, \u015eekil 2'deki se\u00e7icili\u011fin 100%'ye ula\u015fmas\u0131n\u0131 engelleyen bir reaksiyon yan \u00fcr\u00fcn\u00fc olarak kataliz\u00f6r y\u00fczeyinde b\u00fcy\u00fck miktarda karbonlu tortu olu\u015fumundan kaynaklanmaktad\u0131r. Bu ayn\u0131 zamanda karbonlu malzeme birikimine ba\u011fl\u0131 kataliz\u00f6r deaktivasyonunu da a\u00e7\u0131klamaktad\u0131r. Reaksiyon s\u0131ras\u0131nda aktivite h\u0131zla azal\u0131r ve yakla\u015f\u0131k 20 saat sonra kararl\u0131 bir katalitik performansa ula\u015f\u0131r. Katekollerin katalitik performans\u0131 kok kadar iyi de\u011fildir. Hidrokinon i\u00e7in se\u00e7icilik, katekol\u00fcn kok ile yo\u011funla\u015fmas\u0131n\u0131n azalmas\u0131 nedeniyle zamanla 50%'nin \u00fczerine \u00e7\u0131km\u0131\u015ft\u0131r. Saf ZSM-5, katekol i\u00e7in neredeyse hi\u00e7 izomerizasyon aktivitesi g\u00f6stermemi\u015ftir (\u015eekil 2b).Pt ile modifiye edilmi\u015f amorf al\u00fcminosilikatlar, reaksiyonun ana \u00fcr\u00fcn\u00fc olarak fenol ile sadece eser miktarda hidrokinon sa\u011flam\u0131\u015ft\u0131r, bu da katekol\u00fcn fenole hidrojenolizinde Pt i\u00e7in \u00f6nemli bir rol oldu\u011funu d\u00fc\u015f\u00fcnd\u00fcrmektedir. Amorf al\u00fcminosilikatlar\u0131n d\u00fc\u015f\u00fck asitli\u011fi, kataliz\u00f6rlerin d\u00fc\u015f\u00fck izomerizasyon aktivitesiyle sonu\u00e7lanm\u0131\u015ft\u0131r. Ayr\u0131ca \u00e7al\u0131\u015fma, s\u0131ras\u0131yla Pt miktar\u0131n\u0131 ve SiO2\/Al2O3 oran\u0131n\u0131 de\u011fi\u015ftirerek metal ve asit i\u015flevselli\u011finin reaksiyonda Pt\/ZSM-5'in katalitik performans\u0131 \u00fczerindeki etkisini analiz etmeye odaklanm\u0131\u015ft\u0131r.<\/p>\n

 <\/p>\n

Karbonlu polimer destekli izomerizasyon mekanizmas\u0131<\/p>\n

Dihidroksibenzenin izomerizasyonu, Pt i\u00e7eren ve i\u00e7ermeyen H-ZSM-5 zeolitleri kullan\u0131larak sabit yatakl\u0131 bir reakt\u00f6rde ger\u00e7ekle\u015ftirilmi\u015ftir. Kate\u015fol, hidrokinon veya resorsinol suda \u00e7\u00f6z\u00fclm\u00fc\u015f ve 400 \u00b0C'de bir hidrojen ak\u0131\u015f\u0131 i\u00e7inde kataliz\u00f6r katman\u0131na beslenmi\u015f, ard\u0131ndan reakt\u00f6r \u00e7\u0131k\u0131\u015f\u0131ndaki s\u0131v\u0131 \u00fcr\u00fcn analiz edilmi\u015ftir. Reaksiyona giren dihidroksibenzene ba\u011fl\u0131 olarak, reaksiyonun ana \u00fcr\u00fcnleri izomerizasyon \u00fcr\u00fcnleri olarak katekol ve hidrokinon ve dehidroksilasyon \u00fcr\u00fcn\u00fc olarak fenol olmu\u015ftur (\u015eekil 2a, \u015eekil S1, SI). Kataliz\u00f6r\u00fcn aktivitesi ilk a\u015famada y\u00fcksekti, ancak aktif b\u00f6lgelerin deaktivasyonu nedeniyle zamanla kademeli olarak azald\u0131 (\u015eekil 2d, \u015eekil S2, SI). Katekol\u00fcn 0,2% Pt\/ZSM-5(30) \u00fczerinde zaman i\u00e7inde izomerizasyonunun analizi, ba\u015flang\u0131\u00e7 a\u015famas\u0131nda fenol ve hidrokinon i\u00e7in 15%'lik benzer bir se\u00e7icilik g\u00f6stermi\u015ftir. S\u0131v\u0131 faz \u00fcr\u00fcn\u00fcn\u00fcn d\u00fc\u015f\u00fck se\u00e7icili\u011fi, \u015eekil 2'deki se\u00e7icili\u011fin 100%'ye ula\u015fmas\u0131n\u0131 engelleyen bir reaksiyon yan \u00fcr\u00fcn\u00fc olarak kataliz\u00f6r y\u00fczeyinde b\u00fcy\u00fck miktarda karbonlu tortu olu\u015fumundan kaynaklanmaktad\u0131r. Bu ayn\u0131 zamanda karbonlu malzeme birikimine ba\u011fl\u0131 kataliz\u00f6r deaktivasyonunu da a\u00e7\u0131klamaktad\u0131r. Reaksiyon s\u0131ras\u0131nda aktivite h\u0131zla azal\u0131r ve yakla\u015f\u0131k 20 saat sonra kararl\u0131 bir katalitik performansa ula\u015f\u0131r. Katekollerin katalitik performans\u0131 kok kadar iyi de\u011fildir. Hidrokinon i\u00e7in se\u00e7icilik, katekol\u00fcn kok ile yo\u011funla\u015fmas\u0131n\u0131n azalmas\u0131 nedeniyle zamanla 50%'nin \u00fczerine \u00e7\u0131km\u0131\u015ft\u0131r. Saf ZSM-5, katekol i\u00e7in neredeyse hi\u00e7 izomerizasyon aktivitesi g\u00f6stermemi\u015ftir (\u015eekil 2b).Pt ile modifiye edilmi\u015f amorf al\u00fcminosilikatlar, reaksiyonun ana \u00fcr\u00fcn\u00fc olarak fenol ile sadece eser miktarda hidrokinon sa\u011flam\u0131\u015ft\u0131r, bu da katekol\u00fcn fenole hidrojenolizinde Pt i\u00e7in \u00f6nemli bir rol oldu\u011funu d\u00fc\u015f\u00fcnd\u00fcrmektedir. Amorf al\u00fcminosilikatlar\u0131n d\u00fc\u015f\u00fck asitli\u011fi, kataliz\u00f6rlerin d\u00fc\u015f\u00fck izomerizasyon aktivitesiyle sonu\u00e7lanm\u0131\u015ft\u0131r. Ayr\u0131ca \u00e7al\u0131\u015fma, s\u0131ras\u0131yla Pt miktar\u0131n\u0131 ve SiO2\/Al2O3 oran\u0131n\u0131 de\u011fi\u015ftirerek metal ve asit i\u015flevselli\u011finin reaksiyonda Pt\/ZSM-5'in katalitik performans\u0131 \u00fczerindeki etkisini analiz etmeye odaklanm\u0131\u015ft\u0131r. Dihidroksibenzenin kataliz\u00f6r y\u00fczeyinde \u00f6nemli \u00f6l\u00e7\u00fcde yo\u011fu\u015fmaya u\u011framas\u0131 ve karbonlu tortular \u00fcretmesi, izomerizasyonun dihidroksibenzenin ara ara polimerle\u015fti\u011fi ve ard\u0131ndan depolimerle\u015ferek izomerler \u00fcretti\u011fi molek\u00fcller aras\u0131 bir mekanizma yoluyla ger\u00e7ekle\u015febilece\u011fini g\u00f6stermektedir. Polimerik maddelerin ara madde olarak hareket etti\u011fi hipotezini test etmek i\u00e7in, y\u0131kanm\u0131\u015f devre d\u0131\u015f\u0131 b\u0131rak\u0131lm\u0131\u015f kataliz\u00f6rleri 400\u00b0C'de su buhar\u0131 ve hidrojen ak\u0131\u015f\u0131nda i\u015flemden ge\u00e7irdik. \u015ea\u015f\u0131rt\u0131c\u0131 bir \u015fekilde, kate\u015fole ek olarak, s\u0131v\u0131 numunede \u00f6nemli miktarda hidrokinon tespit edildi ve fenol\u00fcn k\u00fc\u00e7\u00fck bir katk\u0131s\u0131 oldu (\u015eekil 3). \u00dcr\u00fcn olu\u015fumu 3 saatlik i\u015flemden sonra durmu\u015ftur. Bu i\u015flemden sonra kataliz\u00f6r, ikinci d\u00f6ng\u00fc i\u00e7in katalitik aktivitenin rejenerasyonunu g\u00f6sterdi (\u015eekil 3).<\/p>\n

 <\/p>\n

\u0130\u00e7g\u00f6r\u00fcler ve Perspektifler<\/p>\n

Fenol hidroksilasyon \u00fcr\u00fcnlerini (kate\u015fol ve hidrokinon) birbirine d\u00f6n\u00fc\u015ft\u00fcrmek i\u00e7in dihidroksibenzenin do\u011frudan izomerizasyonunu sunuyoruz. Katalitik sonu\u00e7lar, katekol ve hidrokinonun Pt\/ZSM-5 kataliz\u00f6r\u00fc \u00fczerinde ba\u015far\u0131l\u0131 ve tersinir bir \u015fekilde d\u00f6n\u00fc\u015ft\u00fcr\u00fcld\u00fc\u011f\u00fcn\u00fc g\u00f6stermi\u015ftir. Reaksiyonun se\u00e7icili\u011fi 74% kadar y\u00fcksekti ve verim 50% kadar y\u00fcksekti. Reaksiyon, dihidroksibenzenin kinona dehidrojenasyonu ve ard\u0131ndan asit b\u00f6lgelerinde yo\u011funla\u015fma yoluyla olu\u015fan karbonlu tortular\u0131n olu\u015fumu nedeniyle zamanla azalan aktivite ile 400\u00b0C'de su buhar\u0131ndaki hidrojen atmosferinde bir hidrojen \u00f6d\u00fcn\u00e7 alma mekanizmas\u0131 yoluyla ger\u00e7ekle\u015ftirilmi\u015ftir. Bu karbonlu tortular, hidrojen ve su ak\u0131\u015flar\u0131nda muamele edilerek izomerize dihidroksibenzene d\u00f6n\u00fc\u015ft\u00fcr\u00fclebilir ve bu maddelerin reaksiyondaki rol\u00fcn\u00fc teyit eder. Bu mekanizma, izomerizasyon s\u00fcrecine dair yeni bilgiler sa\u011flamaktad\u0131r.<\/p>","protected":false},"excerpt":{"rendered":"

Kimyasal Ad\u0131:4-Metoksifenol<\/p>\n

CAS No.:150-76-5<\/p>\n

Molek\u00fcler Fom\u00fcl:C7H8O2<\/p>\n

Molek\u00fcl a\u011f\u0131rl\u0131\u011f\u0131:124.14<\/p>\n

Molek\u00fcler Yap\u0131:\"4-Metoksifenol<\/p>\n

G\u00f6r\u00fcn\u00fcm:Beyaz kristal pul<\/p>","protected":false},"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[69],"product_tag":[],"class_list":{"0":"post-4026","1":"product","2":"type-product","3":"status-publish","5":"product_cat-catalysts-chemical-auxiliary-agents","7":"first","8":"instock","9":"shipping-taxable","10":"product-type-simple"},"yoast_head":"\nChina Hydroquinone \/ 4-Methoxyphenol CAS 150-76-5 Manufacturer - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"Hydroquinone \/ 4-Methoxyphenol CAS 150-76-5 is a key product of Longchang Chemical. We provide the best price. 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