When prepared the acidic oil from the soy oil soapstock, two processes that were direct acidification and acid hydrolysis after saponification were compared. Biodiesel production from acidified soapstocks using a biomass-based carbonaceous catalyst 用大豆油皂脚制备酸化油,比较了直接酸化法和皂化酸解法两种工艺。生物基炭质催化剂催化大豆皂脚酸化油制备生物柴油
Results The acid value and the saponification value in Cera Chinensis could be determined successfully. 结果可顺利测得虫白蜡酸值、皂化值。
Synthesis of coumarin-3-carboxylic acid through sodium ethoxide catalyzed synthesis of coumarin-3-carboxylic acid ethyl ester, followed by saponification, acidolysis cyclization was studied. 实验以水杨醛、丙二酸二乙酯为原料,乙醇钠为催化剂催化合成香豆素-3-羧酸乙酯,再经皂化、酸解环合合成香豆素-3-羧酸。
Test methods for acid value, saponification value, ester value, iodine value, hydroxyl value and unsaponifiable matter of chemical products 化学产品酸值、皂化值、酯化值、碘值、羟值及未皂化物质化学分析方法
Method: To measure fatty acid's formation with gas chromatographic method and to measure the saponification value. 方法皂化值的测定,利用气相色谱法测脂肪酸组分。
Finally, phenylethyl malonic acid was obtained by acidification from saponification of the ester. 将所得的苯乙基丙二酸二乙酯皂化继而酸化,最后得到了苯乙基丙二酸。
The test results show that: 1.with the increase of the dosage of modifier, the acid value, saponification value and softening temperature of modifed rosin increase linearly; 研究结果表明,①强化松香的酸值、皂化值以及软化点都随着加成量的提高而上升,基本上呈线性关系;
The chemical method include treating with sulfuric acid, saponification, acylation, esterification, etc. 化学方法包括酸洗法、皂化法、酰化法和酯化法等。
Study on Synthesis of borneol via esterificat10nof α-pinene over solid acid followed by saponification 固体酸催化α-蒎烯酯化-皂化合成龙脑的研究
Using orthogonal design experiments, the process conditions were studied, the effects of the molar ratio of PEG400 to lauric acid 、 the reaction temperature 、 the weight of the catalyst and the reaction time on saponification value of the product had been discussed. 采用正交实验对聚乙二醇(PEG400)酯化月桂酸的工艺条件进行了研究,探讨了醇酸摩尔比、反应温度、催化剂用量和反应时间对产品皂化值的影响。
Diester was synthesized from α-bromo-dodecanoic acid methyl ester and dihydroxybenzene via Williamson synthesis of ether, and a series of carboxylate ion gemini surfactants were obtained by saponification. The structures were confirmed by~ 1H NMR, IR and elemental analysis. 利用α-溴代月桂酸甲酯与二酚通过Williamson醚化得到二酯,再经皂化得羧酸盐二聚表面活性剂,其结构经1HNMR,IR和元素分析确认。
Fumaric acid has a lower softening temperature and saponification value but a higher acid value, which was beneficial to improving the quality of modified rosin size and dispersed rosin size. 在加成量相同的情况下:富马松香与马来松香相比具有较低的软化点和皂化值,却有较高的酸值,有利于改善强化松香胶和分散松香胶的质量。
The product emulsion stability of different reaction conditions was investigated. The relationship of reaction conditions, acid value, saponification value, hydroxyl value, production esterify distributing and production emulsify stability were discussed especially. 本论文还研究了不同反应条件下得到的产品的乳化稳定性,初步探讨了反应条件、酸值、皂化值、羟值、和产品酯化物分布与产品乳化基质稳定性之间的关系。
The acid value also reduces gradually from the early stage of fat formation to the stage of maturity, so are the specific gravity and saponification value. 不同时期油脂的特性是在形成初期酸值高,而在成熟时酸值降低,比重、皂化值也有所降低。
Methods: By using the the methods in Pharmacopoeia to determine the acid number, iodine number, saponification value, specific gravity, refractive index and content. 方法:采用药典方法对亚麻油的酸值、碘值、皂化值、比重、折光率、含量进行测定。
The dehydrated castor oil was processed into linoleic acid through saponification and neutralization. 脱水蓖麻油用氢氧化钠皂化,再用盐酸酸化,得到以亚油酸为主的不饱和脂肪酸。
Extraction of aleuritic acid by saponification aided with ultrasonic wave 超声皂化法提取紫胶桐酸
Research on Preparation the Effective Thulium Catalyst of Desiccation for Paint by Organic Acid Saponification Method 有机酸皂化法制备高效稀土元素Ce油漆催干剂的研究
According to the analysis of rubber seed oil, C16 and C18 were the main fatty acid components, acid value was 38.836mg/ g, saponification value 198.784mg/ g, iodine value 122.092g/g and it belonged to semi-dry oil. 通过对橡胶籽油的部分理化参数分析表明:橡胶籽油以C16和C18为主,酸值为38.836,皂化值为198.784,碘值为122.092,属半干性油。
The Research on A New Technical Conditions for Synthesis of Calcium Stearate by Stearic Acid Saponification 皂化法合成硬脂酸钙新反应条件的研究
Composition of fatty acid and four kinds of quality in dex-iodin value, saponification value, acid value and peroxide value of walnut oil extracted by Supercritical CO 2 and pressing were studied. 分别对超临界CO2流体萃取法和压榨法制取的核桃油的脂肪酸组分含量,以及碘价、皂化价、酸价、过氧化值等四个质量指标进行了研究。
Study on the encapsulation technique of high purity γ-linolenic acid, part 1& saponification reaction and saponification value 高纯度γ-亚麻酸包合工艺研究Ⅰ&皂化值及皂化反应
A New Technology for Synthesis of Calcium and Zinc Stearate by Stearic Acid Saponification 皂化法合成硬脂酸钙、锌新工艺
The preparation of biodiesel mainly uses transesterification. Present used catalysts are homogeneous acid or alkali, but saponification reaction easily happens and separation between products and catalysts are difficult in homogeneous catalysis. 生物柴油制备方法主要采用酯交换反应,目前多使用的催化剂以均相酸或碱为主,但是均相催化反应易发生皂化反应且产物与催化剂难以分离。