Abstract:
본발명은, Ni 전구체화합물, Cu 전구체화합물및 SiO로부터졸겔법에의해 NiO-CuO/SiO나노복합체촉매를제조하고, 제조된촉매의존재하에글리세롤의수소첨가분해반응에의해프로필렌글리콜을제조하는반응을제공한다. 본발명에따른촉매를사용하면, 10 이하의낮은수소/글리세롤비율에서도높은글리세롤전환율및 높은프로필렌글리콜선택성을달성할수 있을뿐만아니라장시간동안프로필렌글리콜을고수율로생산할수 있다.
Abstract:
본 발명의 목적은 다공성 니켈 포스페이트 분자체, 이의 제조방법 및 이를 이용한 중금속의 제거방법을 제공하는 데 있다. 이를 위하여, 본 발명은 니켈화합물 1 몰에 대하여 인화합물을 0.3 내지 3.0 의 몰비, 염기를 1.0 내지 10.0 몰비로 포함하는 것을 특징으로 하는 중금속 제거용 다공성 니켈 포스페이트 분자체를 제공한다. 본 발명에 따르면, 다공성 니켈 포스페이트 분자체를 중금속을 함유하는 용액과 혼합 및 교반하면, 상기 다공성 니켈 포스페이트 분자체가 흡착제로서 작용하여 니켈, 카드뮴 등의 중금속을 함유하는 용액으로부터 상기 중금속을 약 95 %의 효율로 제거할 수 있다는 효과가 있다.
Abstract:
The present invention relates to a collecting method for high purity organic acid alkyl ester and organic acid from an organic acid fermented solution. Specifically, the present invention does not require a high-priced pretreatment apparatus such as an existing electrodialysis apparatus or a membrane, is economical as compared to an existing method since organic acid alkyl ester and organic acid are able to be manufactured at low temperatures without an additional catalyst, is able to reuse ammonium salts which are by-products by easily separating the ammonium salts, and is able to collect organic acid alkyl ester and organic acid with high recovery rate and high purity by using thin film distillation as compared to a method using an existing distillation.
Abstract:
PURPOSE: A catalyst for preparing levulinic acid or esters thereof from biomass and a method for preparing levulinic acid or esters thereof using the catalyst are provided to facilitate preparing processes without a process of separating by-products such as formic acid. CONSTITUTION: A catalyst for preparing levulinic acid or esters thereof from biomass comprises a graphene oxide carrier and a functional group carried in the carrier. The functional group is selected from groups including carboxylic acid (-COOH), sulfonic acid (-SO3H), and phosphoric acid (-PO3H2). A method for preparing levulinic acid or esters thereof includes the steps of: preparing glucose from cellulose or hemicelluloses; and preparing levulinic acid from the glucose.
Abstract:
PURPOSE: A porous organic-inorganic hybrid, a manufacturing method thereof, an adsorbent comprising the same, and an application thereof are provided to have excellent adsorbing ability at the low relative humid condition by dipping an ionic compound or a polar compound to the porous organic-inorganic hybrid. CONSTITUTION: A manufacturing method of a porous organic-inorganic hybrid comprises the following step. A supplementary inorganic material is dipped to a moist adsorbent which is the porous organic inorganic hybrid in a crystallized form with constant rate or additionally mixed, and dipping inorganic salt with adsorption or hygroscopic ability to the porous organic inorganic hybrid. The supplementary inorganic material is selected from silica, alumina, mesopore, zeolite, boehmite, layer structured compounds, clay, carbon, graphite, graphene, and a combination thereof. The weight ratio of the supplementary inorganic material to the moist adsorbent is 0.1-200 parts by weight based on 100 parts by weight of organic-inorganic hybrid.