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硫酸氢钾

硫酸氢钾的相关文献在1958年到2022年内共计335篇,主要集中在化学工业、化学、轻工业、手工业 等领域,其中期刊论文119篇、会议论文3篇、专利文献96302篇;相关期刊77种,包括景德镇高专学报、井冈山大学学报(自然科学版)、广西科学院学报等; 相关会议3种,包括第三届钒产业先进技术研讨与交流会、中国化工学会无机酸碱盐'97年学术年会、中国土木工程学会水工业分会2018年全国给水深度处理研讨会等;硫酸氢钾的相关文献由617位作者贡献,包括聂红斌、陈丹云、杨希军等。

硫酸氢钾—发文量

期刊论文>

论文:119 占比:0.12%

会议论文>

论文:3 占比:0.00%

专利文献>

论文:96302 占比:99.87%

总计:96424篇

硫酸氢钾—发文趋势图

硫酸氢钾

-研究学者

  • 聂红斌
  • 陈丹云
  • 杨希军
  • 杨晓冬
  • 王夕宗
  • 王虎
  • 胡善树
  • 薄子平
  • 黄锁义
  • 宋海鹏
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 曹嘉慧; 申峻; 王玉高; 刘刚; 李瑞丰; 徐青柏
    • 摘要: 将90#石油沥青(PP)和中温煤焦油沥青(CTP)混溶于甲苯中,在KHSO4催化下,研究了混合沥青中16种多环芳烃(PAHs)的变化量,考察了PP/CTP共混比例、KHSO4加入量、反应温度和反应时间对实验结果的影响;采用元素分析、FTIR、1H NMR及沥青族组成等方法对试样结构进行分析,并利用Brown-Ladner法计算了改性沥青与基质沥青间的结构变化.实验结果表明,在PP/CTP质量比为3:1、KHSO4添加量为3%(w)、反应温度50°C、反应时间2 h的条件下,PP和CTP共混反应改性所得改性沥青的16种PAHs检出量降低率达到73.97%,苯并[a]芘检出量降低率达到51.85%;PP中带有活性基团的成分与CTP中的PAHs发生部分烷基化反应,使PAHs含量降低;且CTP与PP在甲苯的作用下发生组分重组,形成新的类胶体物质,抑制了部分PAHs的释放.
    • 冯磊; 王勤隆; 王雷雷; 杨太宝; 黄长荣; 李晶
    • 摘要: 废铑氧化铝催化剂中含有大量铑元素,回收催化剂中铑元素可以降低生产成本,因此准确测定废铑氧化铝催化剂中铑元素含量至关重要.然而废铑氧化铝催化剂组成复杂,常规湿法消解和微波消解方法无法完全溶解样品.实验采用0.1 g废铑氧化铝催化剂和3.0 g硫酸氢钾在650°C下熔融4 h,熔融物使用10 mL 10%(体积分数)硫酸加热溶解,然后使用电感耦合等离子体原子发射光谱法(ICP-AES)测定铑,建立了熔融-电感耦合等离子体原子发射光谱法测定废铑氧化铝催化剂中铑的方法.ICP-AES工作条件为射频(RF)功率1.20 kW、雾化气流量0.85 L/min.校准曲线的线性相关系数R 2=0.9999;方法检出限为0.01 mg/L,测定下限为0.1 mg/L.按照实验方法测定两个废铑氧化铝催化剂中铑,测定结果的相对标准偏差(RSD,n=9)为0.52%~0.56%;加标回收率为99.6%~100.3%.实验方法用于测定两个废铑氧化铝催化剂模拟样品中铑,测定值和理论值相一致.
    • 杨冶金; 尤静林; 王建; 王敏; 何莹霞; 吴志东
    • 摘要: 运用原位高温拉曼光谱技术研究了KHSO_4从室温至550°C的相变过程,分别基于密度泛函理论及量子化学从头算分析KHSO_4晶体和K_2S_2O_7熔体的分子振动和拉曼光谱散射活性,对拉曼光谱特征峰进行归属,并获取KHSO_4与K_2S_2O_7熔体团簇特征振动的拉曼散射截面,建立特征峰面积与物种浓度的直观关系,并通过Factsage数据库研究KHSO_4分解过程的热力学性能.结果表明,210°C下KHSO_4链状结构向二聚体结构转换,KHSO4由正交α相变为单斜β相; 220~550°C分解为K_2S_2O_7,由平衡常数K计算得到反应焓ΔH=(72.59±2.40) kJ/mol.
    • 唐浩; 唐辉; 汪朝强; 明大增; 李志祥
    • 摘要: 探讨了在无水相中工业浓硫酸分解氯化钾固体时反应的温度、原料摩尔配比、时间以及硫酸质量分数对硫酸氢钾产品的影响,并做相关实验探究尾气氯化氢气体吸收问题.通过单因素实验、正交试验得出:工业浓硫酸与氯化钾反应制备硫酸氢钾的最优工艺条件为温度80°C,原料摩尔比1.1:1,反应时间60 min,硫酸质量分数70%,此时反应转化率约为92%,固相中KHSO4质量分数约为97.5%,KCl质量分数约为2.5%,H2SO4质量分数约为0.1%.其中,对实验影响优先次序为温度>原料摩尔配比>反应时间>硫酸质量分数.尾气HC1气体吸收效果较好.实验制备得到的硫酸氢钾产品完全符合工业标准.%The influences,including temperature,molar ratio,time and mass fraction,in potassium chloride with industrial sulfuric acid to preparation of potassium bisulfate were studied.Finally,some absorption research about the exhaust HCl was conducted.Through single factor and orthogonal experiment,the optimum condition of industrial sulfuric acid with potassium chloride to preparation of potassium hydrogen sulfate was temperature 80 °C,molar ratio 1.1:1,time 60 min and mass fraction 70%.And the conversion was about 92%,the solid content was about KHSO4 97.5%,KCl 2.5%,H2SO40.1%.What's more,the experimental affect priorities was temperature,molar ratio,time,mass fraction.The HCl gas absorption effect was good.Potassium hydrogen sulfate products was in full compliance with industry standards.
    • 汪朝强; 明大增; 罗康碧; 唐浩
    • 摘要: 为了探索出低成本、大规模、高效益生产农用磷酸二氢钾的方法,文中拟对硫酸和硫酸氢钾混合分解磷矿进行工艺研究.考察了搅拌速率、KHSO4与H2SO4的摩尔比、初始SO42-浓度、反应温度以及加料时间对P2O5收率的影响,并在此基础之上进行正交试验.得到最优工艺条件为:搅拌速率为300 r/min,n(KHSO4)∶n(H25O4)=0.2∶0.3,初始SO42-质量分数为15%,反应温度为65°C,加料时间为50 min.该工艺使用的原料廉价易得,能较大地降低生产成本,具有较好的开发利用价值.%In order to explore a producing method of agricultural potassium dihydrogen phosphate with low cost,large scale,high efficiency,a decomposition process of phosphate rock was studied with mixed sulfuric acid and potassium phosphate.The effects of stirring speed,KHSO4 molar ratio to H2SO4,initial SO42-concentration,reaction temperature and time on feed phosphate rock decomposition rate were analysis,orthogonal test on this basis.Optimal conditions are:stirring rate 300 r / min,n (KHSO4) ∶ n (H2SO4) =0.2∶ 0.3,SO42-initial mass fraction 15%,the reaction temperature 65 °C,addition time 50 min.The technology feed is cheap and obtained easy,the direct method can greatly reduce the production costs,and have good utility value.
    • 方文化; 陈葵; 周晓葵; 范先国; 朱家文
    • 摘要: 以湿法磷酸制备的饲料级磷酸氢钙为原料,开发工业级磷酸二氢钾的生产工艺.通过加入适量的磷酸提高磷酸氢钙的分解率,研究了磷酸氢钙与磷酸的预分解反应条件及其与硫酸氢钾复分解反应的条件.优化条件:饲料级磷酸氢钙悬浮液的液固比为4 mL/g,磷酸、磷酸氢钙、硫酸氢钾物质的量比为0.3∶1∶1,反应温度为60°C,硫酸氢钾在反应开始的1h内均匀加入,反应时间为2h.在此条件下,复分解反应中饲料级磷酸氢钙中的磷收率达到94.5%.硫酸氢钾中的钾收率达到99.9%.研究提出,以磷酸预分解磷酸氢钙以及结晶母液循环的磷酸二氢钾制备工艺.解决了磷和钾收率低以及生产成本高的问题,同时无废液排放.%With feed grade dicalcium phosphate prepared by wet phosphoric acid as raw material,the production process of industrial grade potassium dihydrogen phosphate was developed.An appropriate amount of phosphoric acid were added in pre-decomposition reaction for improving the decomposition rate of dicalcium phosphate,and the reaction conditions of the complex decomposition stage were studied.The research results showed that:the ratio of solid to liquid was 4 mL/g in the feed grade dicalcium phosphate suspension,amount of substance ratio of phosphoric acid,dicalcium phosphate,and potassium bisulfate was 0.3∶1∶1,reaction temperature was 60 °C,reaction time was 2 h,potassium bisulfate was added into the reactor evenly during the 1 h after the start of the reaction.In the complex decomposition reaction,the yields of phosphorus from feed grade dicalcium phosphate and potassium from potassium bisulfate could exceed 94.5% and 99.9%,respectively.The study put forward that the preparation of potassium dihydrogen phosphate including decomposing dicalcium phosphate with phosphoric acid and the crystallization mother liquor circulation solved the problems of low yield of phosphorus and potassium,and high cost of production,meanwhile,the process was environmentally friendly and had no waste liquid discharge.
    • 唐浩; 汪朝强; 唐辉
    • 摘要: Sulfuric acid decomposition of potassium chloride to prepare potassium bisulfate can be conducted in aqueous phase and anhydrous phase.The influences of temperature,amount of substance ratio,reaction time,and sulfuric acid concentration on the potassium bisulfate product under two kinds of conditions were investigated.Through single factor experiment and orthogonal experiment,the optimum conditions of aqueous phase were:reaction temperature of 90 °C,amount of substance ratio of sulfuric acid to potassium of 1.2∶1,reaction time of 60 min,and concentration of sulfuric acid of 80% (mass fraction,same below) and theconversion was 98.64% under those conditions.And the optimum conditions of anhydrous phase were:reaction temperature of 80 °C,amount of substance ratio of sulfuric acid to potassium of 1.1 ∶ 1,reaction time of 60 min,and concentration of sulfuric acid of 70%.Then the conversion was 92%.%硫酸分解氯化钾制备硫酸氢钾可在水相和无水相中反应进行.分别探讨了工业硫酸在两种工艺条件下,反应温度、原料物质的量比、反应时间以及硫酸浓度对产品硫酸氢钾的影响.通过单因素实验和正交实验,得到水相最优工艺条件:反应温度为90°C、硫酸与氯化钾物质的量比为1.2∶1、反应时间为60 min、硫酸浓度为80%(质量分数,下同),在此条件下转化率可达98.64%;无水相最优工艺条件:反应温度为80°C、硫酸与氯化钾物质的量比为1.1∶1、反应时间为60 min、硫酸浓度为70%,此时转化率可达92%.
    • 摘要: 一种利用硫酸氢钾和氧化钙生产硫酸钾的方法,包括硫酸氢钾溶解、氢氧化钙调浆、混合反应、硫酸钾溶液和硫酸钙固体分离、硫酸钾溶液浓缩冷却结晶、硫酸钾晶体离心分离,通过上述步骤得到硫酸钾及副产物硫酸钙.本方法所用原材料廉价,大幅度降低了生产成本,在混合反应时通过控制合适的pH,有效降低了硫酸钾溶液中的杂质含量,提高了产品品质,副产物硫酸钙品质较好,有可利用空间.
    • 摘要: 本发明涉及一种生产磷酸二氢钾的方法,将饲料级磷酸氢钙先和工业级磷酸进行预分解反应,再加入硫酸氢钾进行复分解反应,过滤出硫酸钙和滤液,对滤液进行净化处理后浓缩冷却结晶,制备出磷酸二氢钾产品,结晶母液返回到饲料级磷酸氢钙中进行循环操作,或用于无氯复合肥的生产.
    • 王冀艳; 刘勉; 闫红岭; 连文莉; 张帆
    • 摘要: During the determination of lead in ore by 2‐[(5‐bromine‐2‐pyridine)‐azo]‐5‐diethylaminophenol (5‐Br‐PADAP) spectrophotometry ,the interference of many elements (such as Cu ,Zn ,Fe ,Ni ,Bi ,Mn , Cd ,Co ,V ,Ti ,Nb and Ta) could not be ignored .To solve this problem ,the sample was pretreated by KHSO4 precipitation method .Then ,the content of lead in ore was determined by 5‐Br‐PADAP spectro‐photometry .The results showed that the lead in sample could be fully precipitated and separated from ions above by adding 10 mL 200 g/L KHSO4 solution and placing for 20 min after dissolving the ore with hydro‐chloric acid‐nitric acid system .After filtration ,the K2 SO4 ・ PbSO4 composite salt precipitation was dis‐solved with HAc‐NaAc buffer solution at pH 5.6 ,realizing the separation from Ba ,W ,Sr and Ca .Then , 0.4 mL of H3BO3‐KCl‐NaOH buffer solution at pH 9.3 ,0.4 mL of saturated KI solution ,0.4 mL of 10%(V ∶V ) Trion X‐100 solution and 1.0 mL of 0.03 g/L 5‐Br‐PADAP ethanol solution were added into sam‐ple solution successively .The content of lead was determined in 1 cm cuvette at 558 nm .The Beer's law was obeyed for Pb with mass concentration in range of 0.02‐2 μg/mL .The correlation coefficient of linear regression equation was 0.998 .The detection limit was 0.02μg/mL .The proposed method was applied to the determination of Pb in certified reference materials of lead ore ,zinc ore and lead‐zinc ore .The found results were basically consistent with the certified values .The relative standard deviations (RSD ,n=11) were between 2.3% and 5.8% .%2‐(5‐溴‐2‐吡啶偶氮)‐5‐二乙氨基苯酚(5‐Br‐PADAP)光度法应用于矿石中铅的测定时,Cu、Zn、Fe、Ni、Bi、Mn、Cd、Co、V、Ti、Nb和Ta等多种元素的干扰不容忽视。针对这一问题,实验提出了采用KHSO4沉淀法对样品进行前处理,5‐Br‐PADAP光度法测定矿石中Pb的方法。实验表明,采用盐酸‐硝酸体系溶解矿石后,加入10 m L 200 g/L K H S O4溶液,放置20 min后即可见样品中的铅沉淀完全从而与上述离子分离;将沉淀过滤后,采用 pH 5.6的HAc‐NaAc缓冲溶液溶解沉淀,可使K2 SO4・PbSO4复盐沉淀溶解,从而与Ba、W、Sr和Ca等元素分离。在样品溶液中依次加入0.4 mL pH 9.3 H3BO3‐KCl‐NaOH缓冲溶液、0.4 mL饱和KI溶液、0.4 mL 10%(V∶V)Trion X‐100溶液、1.0 mL 0.03 g/L 5‐Br‐PADAP乙醇溶液,于1 cm比色皿中,在波长558 nm处进行测定,Pb质量浓度在0.02~2μg/mL 范围内符合比尔定律,线性回归方程的相关系数为0.998。方法检出限为0.02μg/m L。采用实验方法分别对铅矿、锌矿、铅锌矿标准物质中的Pb进行分析,测得结果与认定值基本一致,相对标准偏差(RSD ,n=11)为2.3%~5.8%。
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