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技術(shù)文章 / article 您的位置:網(wǎng)站首頁 > 技術(shù)文章 > BCR-173 二氧化鈦標(biāo)準(zhǔn)品技術(shù)核心

BCR-173 二氧化鈦標(biāo)準(zhǔn)品技術(shù)核心

發(fā)布時間: 2025-09-25  點擊次數(shù): 84次
BCR-173 二氧化鈦是由歐盟參考交流局(European Community Bureau of Reference)認(rèn)證的二氧化鈦(TiO?)標(biāo)準(zhǔn)品,屬于 ERM/BCR 標(biāo)準(zhǔn)物質(zhì)體系核心成員。其最關(guān)鍵特征為BET 比表面積 8.23m2/g(氮氣吸附法測定),該參數(shù)經(jīng)多輪實驗室比對驗證,具有溯源性和權(quán)l(xiāng)威性。BCR-173 二氧化鈦標(biāo)準(zhǔn)品作為認(rèn)證參考物質(zhì)(CRM),其生產(chǎn)全程遵循 ISO 17034 標(biāo)準(zhǔn),確保批次間穩(wěn)定性偏差<0.5%。


技術(shù)核心

1. 原理支撐
BET 比表面積反映固體材料表面吸附能力,是催化、吸附材料的核心性能指標(biāo)。BCR-173 二氧化鈦標(biāo)準(zhǔn)品通過精準(zhǔn)控制 TiO?顆粒粒徑與孔隙結(jié)構(gòu),形成穩(wěn)定的表面吸附特性,可作為 “基準(zhǔn)尺" 校準(zhǔn)儀器系統(tǒng)誤差。其校準(zhǔn)原理基于朗格繆爾單分子層吸附模型的擴(kuò)展,通過對比儀器測得的 BCR-173 吸附數(shù)據(jù)與標(biāo)準(zhǔn)值(8.23m2/g),修正儀器響應(yīng)系數(shù)。


2. BCR-173 二氧化鈦標(biāo)準(zhǔn)品關(guān)鍵技術(shù)參數(shù)

指標(biāo)
數(shù)值 / 要求
用途
BET 比表面積
8.23m2/g(±0.1m2/g)
校準(zhǔn)基準(zhǔn)值
預(yù)處理溫度
140±5°C
去除表面吸附雜質(zhì)
真空排氣時間
體積法≥12h;重量法≥4h
保證吸附活性位點暴露
最終真空度
<0.01Pa
避免氣體干擾
證書溯源性
歐盟 IRMM 一級標(biāo)準(zhǔn)
確保跨實驗室可比性


東莞市百順生物科技有限公司專業(yè)提供BCR-173 二氧化鈦標(biāo)準(zhǔn)品,歡迎咨詢定購。


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